I'll toss in another contender: The Authority:
https://vsbattles.fandom.com/wiki/The_Authority
Sure, Authority is pretty infamous for being the weakest character in 10-C, only winning out against Folk from a certain game I don't recall which do nothing but twitch in place and subsequently had their profile deleted SOLELY for that reason! Sure, there's Forky, but... A plastic spoon can survive me pressing into it with my thumb and my thumb can exert 10 lbs of force! No lie; I checked by pressing my thumb into a bathroom scale!
But Flash, you may ask, why are you suggesting this frail asshole in a Strongest Characters list? Well, that's the thing. The Authority in his prime is Tier 7-A and has 8-Dimensional hax! Seriously, look at the flipping page!