Board Thread:General Discussion/@comment-31344849-20170219160624

There are many theories says that goner kid is another monster kid in parallel world, or it's another monster kid accidentally duplicated by Gaster's experiment. Many people made theories about monster kid and goner kid (including me) because they look alike, And my theory is that goner kid is actually a sister of monster kid lost and forgotten from Underground by 'accident'. In the waterfall, you can hear a passing conversation by echo flowers, saying

-A long time ago, monsters would whisper their wishes to the stars in the sky. If you hoped with all your heart, your wish would come true. Now, all we have are these sparkling stones on the ceiling... -C'mon, sis! Make a wish! -I wish my sister and I will see the real stars someday...

I think this is conversation made by monster kid and his sister. His sister is telling monster kid about old stories, and they're making conversation about stars. My theory is when Gaster "fell into one of his creations", some monsters got carried away with Gaster, and their existence got wiped out of everyone's memory. Goner kid has a bow on its head(When you see back of the character, you can clearly tell it's a bow.), which supports the theory that it's a girl. Also, if you listen to what goner kid says,

-Have you ever thought about a world where everything is exactly the same... -Except you don't exist? -Ha, ha... The thought terrifies me.

This conversation tells that goner kid was part of the world, but somehow got 'missing' from its world. And world is keep going on like it never existed. That means it got 'seperated' from the world, 'forgotten' just like Gaster did. When you give an umbrella to her, she says

-An umbrella...? But it's not raining. -Ha, ha... -You know, that does make me feel a little better about this. -Thank you.

When we go through Waterfall, we meet monster kid in the raining area and gets in umbrella together. The only relation of 'umbrella' is connected with monster kid and goner kid.(Not including statue puzzle 'cause it's not character) Also, when we walk through sky full of stars with sight of Asgore's castle, monster kid pauses for a second. I think he was looking at sky full of stars, which are actually gems. But this can tell that monster kid wants to see real sky full of stars someday, and this can relate to conversation in echo flower that characters in conversation want to see real stars someday.

It's always welcome to tell me some backup theories, or correcting me wrong. It's kinda really sad if goner kid is actually forgotten sister of monster kid. 