Board Thread:General Discussion/@comment-36554724-20180814031505

I do not know if this theory has been done before, but here is my theory on the six human souls. So, I think we actually have the answers to who killed every single one of them, and maybe the answers have been right in front of us this entire time.

The Green Soul: I believe that the person who killed the human with the green soul may have been Undyne. Why? Well, remember what color soul Frisk's soul turned while fighting Undyne? Green. Maybe the reason why it turned green was because it meant Undyne was behind the human's death.

The Blue Soul: I believe that the person who was responsible for the human with the blue soul was no other than Sans. Why? Well, I guess you could say that Papyrus could have also killed that human, but remember, Papyrus doesn’t really seem interesting in killing anyone. Besides, it doesn’t seem hard to get killed by Sans. Also, Frisk's soul did turn a blue during both Sans and Papyrus' fight. The only thing is that Sans did make a promise to Toriel to not kill any human in the underground. However, we are never told when Sans made this promise, so if this is the case, then I am going to guess Sans didn't meet Toriel yet. Also, remember, the human's ballet shoes are in Waterfall, and Sans does have a sentry station there. Maybe this is why Sans seems to actually have a depressed side to him. Maybe he just regrets it.

The Light Blue Soul: I believe that Sans may also be responsible for this death. Why, well, let’s take a look at the color of Sans’s glowing eye. Sure, there is a little bit of yellow to it, but it also has a light blue part. Could this possibly represent that Sans killed that human as well. Of course, like I said before, if this is the case, then Sans probably didn’t know Toriel yet.

The Purple Soul: I believe that Muffet is responsible for the death of the human with the purple soul. Why? Well, Muffet does turn Frisk's soul purple. Maybe when she found the human with the purple soul, she thought all of her victims should have purple soul. Besides, Muffet does seem kinda insane with the cost of her products and the fact that she uses her own kind to make food. Hey, maybe the same person who hired her to kill Frisk also hired her to kill the human with the purple soul.

The Yellow Soul: I believe that there might be three suspects to the murder behind this human. Who are they? Sans, Mettaton, or Alphys. Why do I think one of the three of them killed them? Well, here is why. As for Sans, take a look at his eye. It glows both light blue and yellow. Maybe like the light blue, it represents that Sans killed that human. If this is the case, then this would mean that Sans didn’t meet Toriel yet. Now, Mettaton or Alphys. Why? Here is why. Remember, when you fight Mettaton, Frisk's soul does turn yellow. Also, remember, Mettaton was a human eradication robot before becoming a star. Also, remember, his screen is yellow. Maybe the red on the screen meant that he was going to kill Frisk next because, well, Frisk’s soul is red. Also, I guess this would mean that Alphys was behind the murder. Maybe after seeing Mettaton kill the human, maybe she became really stressed. Maybe it is why she stutters. Also the empty gun did belong to this human, and remember, it is in the ally of MTT Resort. Maybe Bratty and Catty just happened to buy it from Mettaton after he killed the human.

The Orange Soul: And last but not least, the Orange human soul. Who killed this one you ask? Well, I believe that the murder is... absolutely nobody. I believe that this may have just been an accident. So, remember those orange laser things in Hotland? Well, maybe one of those killed them. Of course, maybe someone else was responsible for the death, but who? I do not know.

So that is my theory on the Six Human Souls. How do you think? 