Alright, here are the characters I am 100% keeping in the sequel, assuming everyone survives (which is not happening anyways, but anyways):
Peter Parker, Spider-Man. Depending on what point in time it is when the get re-warped, he may or may not have Iron Spider. Either way, his Spider-Sense makes for a plausible survival and he is just way too fun to kill off.
Gabriel Gray a.k.a. Sylar. If he lives through the original, he will definitely survive Gaster. He already has a ton of abilities he stole prior to the sequel, so he might have enough to reasonably live through it.
Meta Knight. I mean, in some games, Meta Knight is able to teleport. He can also turn into a tornado. So he could probably survive this event easily. In Smash, his Down-B move is to teleport closer to the enemy and strike, and I’m using the Smash version of Meta Knight (Brawl, since that was the best version).
Characters who might survive, but haven’t been decided on:
Thor Odinson, God of Thunder. I mean, we all know he is definitely capable of surviving this, but I’m not so sure he should. I could always take him out to give others the spotlight.
Anakin Skywalker a.k.a. Darth Vader. He could probably overcome Gaster with the force. Not necessarily defeat him, but enough to survive the event. Once again, I’m not sure whether he should.
James “Sawyer” Ford and Riot. In his normal human form, Sawyer would never survive, but his bond with Riot could help him live through the event with Gaster.
@Comic are all deaths in the G.E.E. (Gaster Extinction Event) permanent, or is it like World of Light where they are turned into corrupt soldiers and the living characters have to free them?
Also, like I have stated in the past, Kaleb will be completely absent from the sequel. I can’t exactly kill off my main Pokémon OC in a non-Pokémon RP.