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Goku: unlimited potential, master martial artist, love for fighting
Luke Skywalker: powerful Force user, Jedi Master, skilled pilot
Wolverine: Essentially invulnerable, decades of fighting experience, metal claws
Popeye: cartoon strength and invulnerability, seasoned sailor, Spinach buff
Saitama: ONE PUUUUUUNCHHHH!
All Might: One for All, superhero experience, ability to motivate teammates to push themselves to a higher level
Superman: faster than a speeding bullet, more powerful than a locomotive, can leap tall buildings in a single bound
Optimus Prime: leadership skills, military experience, can turn into a truck
Spider-Man: spider powers, high intellect and tech skills, ability to overcome nearly any obstacle
Batman: unlimited money, plot armor, he's the Goddamn Batman