the human keeps undertale trapped in a constant loop of resets and only does genocide routes over and over. killer is the only one able to remember these resets and slowly grows numb to it all. one day, the human offers for him to join them, and against his own will, killer accepts. there are 2 possible timelines established by killer's creator: one where he continues to help the player with the slaughter of monsterkind, and one where he rebels and kills the human. 2 continuations of the latter exist where killer joins nightmare, and later leaves nightmare with color.
killer's thoughts on it all
when the shadows get too much
killer's take on powerscaling
nightmare beats killer's cats
successful rescue attempt
rahafwabas's summary of something new
clarification on existing endings
up to interpretation endings
killer's design reference
killer's blasters reference
perchance mischievousness
killer kinda misses nightmare
he'd rather ketchup than be your friend
killer doesn't like anyone
"i dislike everything", he says as he pets a cat
the unnerving save sparkle
elaboration on his hobbies
at least he seems to enjoy the hobby...
100% efficiency cleaning outfit
how does it feel? aren't you tired?
everyone wanted this, you wanted this
"who said i was a good guy?"
silence from the "bad guy"
the soul/sans and determination
angel and devil on his shoulders
the eye gunk (alternate version)
killer thinks they're always watching
clarification on killer's hallucinations'
killer and chara are "friends"
the state of something new
killer vs swap: eternal beef
alternate timeline killer talks about swap
multiversal interactions with others
unwillingly forced to socialize
killer vs the star sanses
blocked cross thoughts (alternate version)
killer witnesses crossmare (real not fake)
rejected (broken heart emoji)
that was a real pain in the grass
rahafwabas's recommended guide to killer ships
miscellaneous (in reblogs due to hyperlink limit)