Alright then. I'd say my favorite verse is the
Sonic the Hedgehog verse , and since all of my cast goes no higher than Tier 4, I'll use the weaker game canon for this. Also since the
Archie Universe is just overpowered beyond all recognition.
My Cast:
Apollyon from For Honor
Assassin from Fate/Extra
Kall-Su from Bastard!!
Vash the Stampede from Trigu (Heck yeah!)
And
Khârn the Betrayer from Warhammer 40,000
Awesome as Apollyon seems as a character, she wouldn't hold her own against Tier 6 or so characters at all, so she's down like that pretty much no matter who she fights. Even Silver Sonic from Sonic 2 is an entire Tier above her, from 9-B to 8-B. Overall, not a fun matchup.
Assassin seems very intriguing, I must say. Resistence to conventional weapons, soul manipulation, Massively Hypersonic speeds, Invisibility, the list goes on. Though his tier placing doesn't hold his own against the Sonicverse, he still has some interesting gimmicks and/or abilities that allow him to hold his own against the weaker characters of the Sonicverse.
Kall-Su, despite being even higher than Assassin and really beginning to power creep into the Sonicverse, has much less information and noticable abilities/feats than Assassin does. His Cryokinesis seems very impressive, but other than that, he has little in the way of hax, so he wouldn't be able to hold his own against any of the High/Top tiers of the Sonicverse.
Vash the Stampede, while not strong enough to compete with the Super characters, still has a very nice tier placing of 7-B to 5-B at his max potential. He has little in the way of hax, Black Hole bullets aside, but his impressive stats really put him up there.
Khârn the Betrayer seems absolutely busted compared to the others here. With a 5-B to potentially 4-B tier placing, a really strong Power Nullification, being able to even negate Reality Warping, various immunities and resistences, alongside very impressive stats. Definitely the strongest character I somehow pulled out of the rabbit hole.
I still think the Sonicverse would ultimately win in the end, as Sonic himself in his Darkspine and Super forms reach the Tier 2 range, and with Multi-Universal to Immeasurable stats, alongside crazy hax, he'd pretty much cremate everyone that I have. That's not even touching the questionable canonicity of Hyper Sonic, the other Super characters, and Eggman himself either. Overall, Sonicverse takes this by a pretty discernible margin.