@Naian
1)Connie: He is tired of being betrayed and so decides to betray Eren, the only one who didn't betray them and Eldia,Eren plan also implied protecting Eldians, so Connie family should be safer this way, but no he decides to go against Eren and put his family in danger after killing Eren, mfw.
2)Grisha: I understand why he betrayed Eren, he was used by him, but as other say, why did he gave him the Attack Titan...
3) Mikasa: No idea why she is with Armin, they are characters you understand why they are cucks or completely brainlet, like Armin or Hangie, but Jean,Levi,Mikasa, mainly those 3, c'mon, why do they even help Armin?