Mention a character a little more powerful than the previous one of the following series:

[Captain Cadaver]

MCU Thanos

It's meant to only be slightly more powerful than the character from before, so bringing Thanos into things already is a bit overkill when even his base self is at least Small Country level.

[mention]Pocket-Gog~[/mention] Assuming you're talking about Pre-Sakaar Hulk (since post-Sakaar would be a huge jump in power), that's pretty arguable, but I'll let it be.

Same stats as Thor, so I'll bring in Pica from One Piece (same power as Base Thor/Pre-Sakaar Hulk, but with far better combat speed).

Edit: Forgot it had to be from the universes in the OP. I'll change the choice to Mr. Popo.