Thanos is the epitome of broken
Doom absolutely destroys any ranged with his and can even hold up fairly well with everything Thanos can shoot besides gemspam.
Juggernaut kills EVERYTHING in 4-5 hits, and is originally playable (He's the one guy you hope you never have to fight in the normal game)
No one else matters or is even close.
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Never underestimate the power of stupidity in numbers. ~War13104
Never stoop to the level of idiots. They will drag you down and beat you with experience.