Fate is the one that comes to mind. Just skills. Your big brawler dude might be like

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• Fight: 4
• Provoke, Rapport: 3
• Will, Athletics, Notice: 2

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• High Concept: King of the Ring Fighter
• Trouble: Always a Show Off

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• Stunts and backgrounds: not going to make them up now but they add more depth

You don't need to know this guy has exactly 8 or 10 intelligence, or whatever.