Namek saga era Frieza and crew.
Frieza (final form, 50% to start but can obviously power up) + Ginyu Force
Versus
Captain Marvel
Hulk
Sentry
Nova Prime (Rich with Wordmind)
Quasar (Wendel Vaughn)
Iron Man in Hulkbuster
Thor (classic with Mjolnir)
Rules: If Sentry is too much, remove him.
I would enjoy hearing your ideas on both speed equalized and normal conditions.