Liam/Leonardo
Reid Tash
Jason
Jenny
sans Serrif Font
Papyrus Baskerville Font
Wing Ding(s) Gaster Font
Ariel Nova Font
Asriel Dreemurr
Chara Dreemurr
Frisk Dreemurr
Asgore Dreemurr
Toriel Dreemurr
Gerson Kermit Boom
Undyne Kraken Boom
Alphys
Bête Noire
Ink(! Sans)
Blueberry
Error(! Sans)
Edge
Fell
UF! Chara
UF! Frisk
Swap Frisk
Swap Chara
Swap Paps
Swap and UF (everyone else)
UnderFresh (everyone)
DustTale (All survivors)
DeltaTale
StoryShift (everyone)
Special StoryShift Chara
(where there is no Asriel and I fell down into the underground during a mission and I lived with Asgore, Toriel, And Chara for twenty timelines which lasted 1/2 a year each)

Dead Characters:
Mary AKA Flowerfell Frisk
Flowerfell! Sans
Jean Adams
A27 others who you'll have to wait for.