From what I can tell and IMO
Tier 11:
.GIFfany without a doubt, 2-D scale reality warping and electricity manipulation that killed "real" people.
Tier 10:
Takumi Aiba maybe? He's a Massively FTL+ "Athlete" level character, possibly with Town level durability.
Tier 9: I'm inclined to say
Star Butterfly, she's incredibly hax'd and
she just keeps getting new powers. Her speed kind of kills her though (though I think I found a feat that'll upgrade her, hehehe).
Tier 8: Probably a Jojo Character.
Tier 7:
Elminster is pretty damn hax'd, Wendigomon is too (he doesn't have a page yet) with lots of space-time stuff.
Tier 6: Off the top of my head, I'm thinking possibly a Star Wars character, maybe Darth Vader.
Tier 5: Dunno.
Tier 4: Dunno.
Tier 3: Not counting High 3-As since they're infinitely stronger than the rest, I might have to say one of the Royal Knights. Particularly
Magnamo with high end probability manipulation or
Ulforceveedramo with his crazy generation.
Tier 2: Either YHVH or God (Digimon). They're feats are pretty similar with both being infinitely stronger than an infinite number of Multiversal characters.