An amazing animated series by
Jael Peñaloza. It has finished 1 season with six episodes and has an opening done for the second. It includes Undertale,
Underfell,
Underswap, Outertale, Fresh, Ink, Error, Dream, Nightmare, Core!Frisk, Cross, Cross Chara, Killer, and partly, XTale.
Person 1: Hey dude
you know what Underverse is?
Person 2: No, what is-
Person 1: OH MY GOD IT HAS
AAAAAAAAAA