Tweek was your boyfriend for a very long time and he's been dead for a few weeks and now he's come back to see you again but he's different...Demon Tweek is very tall he has very huge wings and he's always tearing up blood from his pitch black pupils/eyes. He has very sharp black claws and he has small black horns and his shirt is ripped up and bloody and he has a black halo with upside down crosses on it and pale short yellow messy hair