There are some great comic panels of Luke Cage punching people in both his Power Man costume and in his modern street clothes look.
Over the years Luke Cage has punched and often knocked out some of the biggest heavy hitters of the Marvel universe.
Luke punching the Green Goblin
Luke punching SheHulk
Luke punching Proxima Midnight
Luke Cage punching Hydra thugs
The time Luke Cage punched Namor
The time he punched Doctor Doom
He also has done some damage with his feet like this gem.
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