Asriel Dreemurr

Asriel Dreemurr (typically /ˈæz.ɹiː.əl ˈdʒɹiː.məɹ/) is the biological child of Toriel and Asgore, as well as the adoptive brother of the fallen human. He is Flowey's former self, prince of the Underground, and the final boss of the True Pacifist route.

Appearance
Asriel's appearance is similar to his parents, with long ears, a snout, and visible fangs. In his initial form, he wears a green long-sleeved shirt with yellow stripes, and black pants.

God of Hyperdeath
This form is named directly in the game, where the "Check" option labels Asriel as "the absolute GOD of Hyperdeath!" in this form. The sclera of Asriel's eyes becomes black, his fangs become longer, and he grows a pair of horns. In this form, he wears a long dark robe with white sleeves and the Delta Rune on the front, similar to Toriel's although with a large collar and shoulder pads. He also appears to be wearing a locket similar to the Heart Locket.

Angel of Death
While this form is not directly named, it strongly resembles the Delta Rune, which resembles an "Angel of Death" in a prophecy in the Underground. In this form, his body becomes more geometric, his horns longer and his teeth sharper. He grows a pair of wings that continuously change color, and his lower body becomes sharp and heart-shaped.

Personality
Before his death, Asriel was known to be a docile, unadventurous and loving child who loved jokes. After being brought to life again without a SOUL as Flowey, however, he became incapable of feeling joy, leaving him bored and resentful. After temporarily regaining his compassion, he profusely apologizes for his actions to Frisk, feeling bad as he became aware of how wrong his actions were.

Main Story
Before the events of Undertale, Asriel found the fallen human, who was the first human to fall into the Underground. They became his adoptive sibling and best friend. When the human died, their last wish was to see the Golden Flowers of their village, on the Surface. Asriel absorbed their SOUL, and the human carried their own body across the barrier to their home village. Asriel clarifies that he and his sibling shared control of their body after their SOULs had combined; he did not pick up the human's body.

The villagers assumed that the Asriel/Human fusion had killed the child, and they attacked mercilessly. The Asriel/Human fusion, lethally wounded, returned to the Underground and died. Once deceased, Asriel's dust spread across the garden, leaving his essence on it.

Later, Alphys injected determination into the first golden flower that had bloomed in the garden just before the queen left. Initial experiments on the flower vessel proved unsuccessful, and Alphys returned the vessel to Asgore. Once the vessel was replanted, Flowey awoke within the garden. Though Asriel's essence from the garden bed granted Flowey Asriel's memories, he soon found that neither his mother nor father could elicit any emotional response from him. He did not have a monster SOUL and was unable to feel love, joy, or compassion.

Flowey took his own life. However, through the determination that Alphys had injected, Flowey obtained the power to SAVE and found himself returned to where he was first brought to life. Using that power, Flowey first decided to help the Underground, but became bored and began killing monsters. After seeing and doing everything he could, he became apathetic.

Neutral Route
When the protagonist falls into the Underground, their determination outweighs Flowey's, which takes away his ability to SAVE. Flowey tells the protagonist that in this world "it's kill or BE killed", and tries to kill them in an attempt to steal their SOUL. However, Toriel stops him. He appears again at the end of the Ruins after the protagonist fights Toriel.

Later on, when the protagonist falls into the Garbage Dump, Asriel's sound bite can be heard during a memory of the fallen human's.

True Pacifist Route


In the True Lab, the protagonist discovers that the fallen human and Asriel had worked together on a plan to get to the surface and retrieve six more human SOULs. The human thought of the idea to poison themself with buttercup flowers so that Asriel could absorb their SOUL and go through the barrier. While the human was on their deathbed, Asriel informed them he did not think it was a good plan anymore; ultimately, this leads to him backing out of the plan in the future.

After restoring the elevator's power, the protagonist receives a phone call from what is believed to be Asriel, mistaking the protagonist for his adopted sibling.

Flowey appears when the protagonist and their friends come together to stop the fight between the protagonist and Asgore. A vine from Photoshop Flowey appears, and it tangles and traps their friends. More monsters show up, encouraging the protagonist to continue fighting. Flowey absorbs the SOULs of every monster in the Underground (except Napstablook), as well as the six human SOULs and transforms into Asriel.

Asriel greets the protagonist as  before he transforms into ASRIEL DREEMURR, God of Hyperdeath. He then informs the protagonist that he does not care about destroying the world anymore, and instead just wishes to reset the timeline, so everything unfolds again from the beginning.

He then says that his first form is just a fraction of his real power and transforms into the Angel of Death. Asriel tells the protagonist that they will die in a world where no one remembers them.

The protagonist calls to the Lost Souls inside of Asriel's SOUL and reminds them that they are friends with the protagonist. After all Lost Souls regain their memories, the protagonist realizes that someone else needs saving. The protagonist calls their name, and a few sepia tone pictures display. The pictures are of Asriel and his sibling together when the human first fell to the Underground.

Asriel begins crying and reverts to his original form. He then realizes that the protagonist was not his adopted sibling, and asks what their name is. The protagonist will respond "Frisk." He tells Frisk how many other monsters love them, and apologizes to Frisk for hurting them. He then proceeds to destroy the barrier that keeps the Underground apart from the surface and returns the monster SOULs to everyone.

He will then talk to Frisk more, telling them that he has to go. Frisk has the option of hugging Asriel to comfort him before he disappears, and Asriel will ask them to take care of his parents.

True Pacifist Ending
During the epilogue, he is seen at the flowerbed where Frisk fell at the beginning of the game. He can only be spoken to immediately after his boss fight; if the player watches the end credits and reloads the game, Asriel will not appear. Asriel speaks extensively to Frisk and offers them a different philosophy than his flower counterpart: "Don't kill, and don't be killed."

After the credits sequence, when reopening the game, Asriel returns as Flowey and begs  to "Let Frisk go" and allow everyone to live their lives. Asriel no longer appears in the epilog or the credits sequence unless the player redoes the entire route.

Genocide Route
After the protagonist kills Toriel, Flowey tells them that they are not really human, and mistakes them for the first child, telling them that they are still inseparable after all those years.

When the protagonist reaches New Home, Flowey tells the protagonist everything about his life as a flower, his shock when he woke up in the garden without limbs, his lack of feelings and compassion, his suicide, and how he got the ability to SAVE.

Flowey explains that at first, he used his SAVE ability for good. After a while, however, everyone became predictable, and that is when he decided to kill others. Flowey dismisses his reason for killing people as an excuse, assuring the protagonist that they know how liberating it is to act that way, and calling out those who "want to see it, but are too weak to do it themselves." He then says that even that bores him and that he has seen and done everything that can be done in the world.

Flowey tells the protagonist how unique they are, and how their determination is greater than his. He tells them how tired he is of everything and how much he wants to show humanity that despite everything, this world is still kill-or-be-killed. He then realizes that the protagonist will not hesitate to murder him as well, and escapes to Asgore, warning him about the protagonist.

After the protagonist defeats Sans, they easily kill Asgore. Flowey destroys his father's soul and pledges himself to the protagonist one final time in an attempt to save his own life, revealing his true identity as Asriel in the process. He cries and begs the protagonist not to kill him, to no avail.

In Battle

 * See Asriel Dreemurr/In Battle

Player
Asriel speaks to the player directly when the game is re-opened after the True Pacifist Ending Credits while in his Flowey form, begging them never to play the game again, for the sake of everyone's happiness.

Protagonist
In the beginning, Flowey attempts to kill Frisk and steal their soul, telling Frisk that it is a "kill or be killed" world.

In the Neutral Route, Photoshop Flowey fights Frisk and intends to kill them as many times as possible to make them suffer.

In the Pacifist Route, Asriel will mistake Frisk for the first human, and calls them his best friend. After the final boss fight, Asriel will realize that Frisk is not the First Human, and ask what their real name is. He will then later tell Frisk, if they find him, that he is grateful for them saving the underground and his family.

The First Human
Asriel was the first to find the first human when they fell into the Underground. He became their best friend after helping them, and then the first human's brother after Toriel and Asgore adopted them.

Asriel plotted with the first human to absorb their SOUL and go to the surface and then collect six more human SOULs to break the barrier. Though Asriel backed out of this plan after bringing the first human's body to a flower patch in the village, stopping the first human's consciousness from taking over and killing the humans there. Even though the humans were hostile and ultimately mortally wounded him, he still walked back peacefully into the Underground carrying the first human's body.

In the Pacifist Route, he describes the first human as being the only one who understands him.

In the Genocide Route, Asriel describes their relationship as inseparable after a long time passed. At the end of the route, however, he becomes fearful of the first human, killing Asgore and destroying his SOUL before the first human could steal it and break out of the underground. After saying they are still best friends and begging the first human not to kill him, they will do so, stabbing him until there is nothing left.

However, Asriel does allude to the first human if the player reaches the Neutral Route a second time, as the only one whom he still feels that they understand him. However, Asriel then states that even then, he could not truly care about them.

Asgore
Asgore is Asriel's father. In different timelines, when Asriel woke up as Flowey, Asgore was the first to find him. Asriel informs Asgore of his identity, hoping to feel something and possibly turn back into his original form. However, he discovers he feels nothing for Asgore any longer, and grows to hate him.

Asriel then reloads into other timelines and murders Asgore as well as other monsters.

In later timelines, as well as the one where the player is in, Asgore does not know of Flowey.

Asriel's habit of saying "gosh," "golly", and "howdy" may come from Asgore.

Toriel
Toriel is Asriel's mother. In older timelines after failing to feel anything with Asgore, he had turned to Toriel in hopes of feeling love again with her. Though this ultimately failed as well and led to him resenting everyone in the Underground as well as his own parents.

In other timelines, after not feeling anything, he starts killing Toriel and the other monsters to try and feel something.

In the current timeline with the player, Toriel is unaware of the fact that Flowey is Asriel.

Alphys
Flowey is a byproduct of Alphys' experiments with determination.

The first seed that bloomed when Asriel returned after bringing the first human out of the Underground was also a seed that Asriel's dust remained on, trapping his essence inside of the flower once Alphys injected it with determination. (Essence and SOUL are different while SOUL is the monster's soul, the essence is only part of it, and is the remnants of a broken SOUL.)

It is not known if Asriel is aware of this or not, though it is possible he knows of the True Lab.

Sans
In one of the Neutral Endings, Flowey refers to Sans as "Papyrus's garbage brother" and "smiley trashbag" and holds a deep disdain for him. Apparently Sans "caused more than [his] fair share of resets", as if in some of Flowey's previous endeavors with his SAVE ability he was forced to engage Sans and was defeated by him.

Papyrus
Asriel as Flowey thinks of Papyrus as a fun person to mess around with, which he does before and during the events of Undertale. Papyrus has created a Flowey Fan Club several times. Flowey tells Papyrus about New Home at the end of the True Pacifist Route.

Dialogue
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True Pacifist Ruins Dialogue
[When talked to a first time]
 * Don't worry about me.
 * Someone has to take care of these flowers.

[When talked to a second time]
 * Frisk, please leave me alone.
 * I can't come back. I just can't, OK?

[When talked to a third time]
 * I don't want to break their hearts all over again.
 * It's better if they never see me.

[When talked to a fourth time]
 * ... why are you still here?
 * Are you trying to keep me company?
 * Frisk...
 * Hey.
 * Let me ask you a question.
 * Frisk... Why did you come here?
 * Everyone knows the legend, right...?
 * "Travellers who climb Mt. Ebott are said to disappear."
 * Frisk.
 * Why would you ever climb a mountain like that?
 * Was it foolishness?
 * Was it fate?
 * Or was it... Because you...?
 * Well.
 * Only you know the answer, don't you...?
 * Well.
 * Only you know the answer, don't you...?

[When talked to a fifth time]
 * I know why   climbed the mountain.
 * It wasn't for a very happy reason.
 * Frisk. I'll be honest with you.
 *  hated humanity.
 * Why they did, they never talked about it.
 * But they felt very strongly about that.

[When talked to a sixth time]
 * Frisk... You really ARE different from .
 * In fact, though you have similar, uh, fashion choices...
 * I don't know why I ever acted like you were the same person.
 * Maybe... The truth is...
 *  wasn't really the greatest person.
 * While, Frisk...
 * You're the type of friend I wish I always had.
 * So maybe I was kind of projecting a little bit.
 * Let's be honest. I did some weird stuff as a flower.

[When talked to a seventh time]
 * There's one last thing I feel like I should tell you.
 * Frisk, when  and I combined our SOULs together...
 * The control over our body was actually split between us.
 * They were the one that picked up their own empty body.
 * And then, when we got to the village...
 * They were the one that wanted to...
 * ... to use our full power.
 * I was the one that resisted.
 * And then, because of me, we...
 * Well, that's why I ended up a flower.
 * Frisk...
 * This whole time, I've blamed myself for that decision.
 * That's why I adopted that horrible view of the world.
 * "Kill or be killed."
 * But now... After meeting you...
 * Frisk, I don't regret that decision anymore.
 * I did the right thing.
 * If I killed those humans...
 * We would have had to wage war against all of humanity.
 * And in the end, everyone went free, right?
 * I still feel kind of sad knowing how long it took...
 * ... so maybe it wasn't a perfect decision.
 * But you can't regret hard choices your whole life, right?
 * Well, not that I have much of a life left.
 * But that's besides the point.

[When talked to an eighth time]
 * Frisk, thank you for listening to me.
 * You should really go be with your friends now, OK?
 * Oh, and, please...
 * In the future, if you uh, see me...
 * Don't think of it as me, OK?
 * I just want you to remember me like this.
 * Someone that was your friend for a little while.
 * Oh, and Frisk...
 * Be careful in the outside world, OK?
 * Despite what everyone thinks, it's not as nice as it is here.
 * There are a lot of Floweys out there.
 * And not everything can be resolved by just being nice.
 * Frisk...
 * Don't kill, and don't be killed, alright?
 * That's the best you can strive for.
 * Well, see you.

[When talked to subsequent times] }}
 * Frisk...
 * Don't you have anything better to do?

Trivia
When attempting to name the Fallen Child "Asriel", the response becomes "..." and prevents the name from being used.
 * Asriel's name has several possible meanings or origins.
 * Asriel's name is a combination of his parents' names, Asgore, and Toriel, likely stemming from Asgore being terrible at naming things. An interesting thing to note is that this follows Anglo-Saxon naming traditions, from where the English language imported names like Albert, Edgar, or Wilfred.
 * "Asriel" might be derived from "Azrael," the Angel of Death in Judaism and Islam. Gerson mentions an Angel of Death in his explanation of the Delta Rune prophecy.
 * "Asriel Dreemurr" is an anagram of Serial Murderer.
 * "Dreemurr" is similar in pronunciation to "Dreamer," alluded by the ACT "dream" in his battle, and his leitmotif "Hopes and Dreams."
 * "Asrieel" is also a name of Hebrew origin that means "Helped by god." This might be a reference to Asriel being miraculously saved and turned to flower after dying, or helping Frisk by breaking the barrier with his god-like powers.
 * Both Undyne the Undying's armor and Mettaton NEO's body closely resemble Asriel's Angel of Death form, displaying a heart on the chest (and both gloves in Undyne's case), large, spiked shoulder pads, and, in Mettaton NEO's case, enormous, vibrant wings.
 * Napstablook is the only monster whose SOUL is not absorbed by Asriel.
 * If the game is hacked, it is possible to spare Asriel during his boss fight, and the protagonist will be left on overworld where they left off: in front of Asgore, with the six souls. Nothing will happen, and the protagonist can walk around and even above the barrier.
 * It is possible that Asriel inherited his father's trait of being bad at coming up with names, as when he is in his flower form he names himself "Flowey".