Omgosh, I'm not the only one!!! I've literally been telling my sister since about a week after Grumbot prime came through the rift that it's probably season 7 Grumbot!!!
Axollay! Grumbot Prime & the Grian from the universe where Mumbo didn't become mayor could possibly be from the same universe because after Mumbo lost the election, they put Grumbot into a simulated reality where Mumbo won the election, and Grumbot believed it. And for Grian being killed, the timeline could have branched off because Grumbot may have realized that Mumbo & Grian had lied to him and killed Grian.
Caption this Meme
