Board Thread:Roleplaying/@comment-43795915-20200129200031/@comment-38557913-20200130142657

Geno Frisk: I must have mixed up AUs. Teleportation is hard when you must use a stolen soul. You’re clearly not going to bow, so brace yourself for impact.

They prepare an attack like Chara’s at the end of the game in order to erase UnderFell. (Also, all characters not from UnderFell won’t be erased since only that universe is being deleted.)