Supervillain vs Tournament--Who should be in?

i would think sbp would be the most op in that group but i like darksaints list is ultron to powerful for this list?

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Sinestro
Magneto
Black Adam
Hank Henshaw
Doomsday
Atrocitus
Larfleeze
Darkseid
Apocalypse
Amazo?
The Shade
Parallax Kyle
Loki
Ultron
Proteus
Terrax