sans: the 9th human to fall, he doesn't remeber much on his past life or why he fell.

flowgore: a really depressing flower who tries to acts nice but he just wants it back, it all back before they fell.

chara: the monsters in the ruins don't know much on them but they always seem to protect the monsters there.

frisk, frisk the frog (my favorite design so far): a mute frog who lives with their sibling building traps, despite their looks and lack of warm blood their usually the kindest and warmest monster in the room.

M.K.: what does M.K. stand for well wouldn't you like to know, a rookie guard member who try's to ack a like super hero making a lot of plans to capture a human when they come.

THE GREAT PAPYRUS: A YOUNG PUZZLE GENIUS WHO HELPS THE EVER SO LOST AND LAZY HUMAN THOUGHT OUT THE UNDERGROUND.

capt axe. Susie: despite her whole imitating demeaner she truly doesn't want to kill anyone, by peer pressure she became the caption.

doctor noelle holiday: the royal scientist very tried mainly from over working herself and trying to be a help to everyone. has seen what happened to the royal family.

Asriel dreemurr: the reluctant king of the underground his misses the old day but pushes forward for his people. one day a human fell down the second one this was the worst day in asriel's life.