“Once the contract is signed, it's done — Slade Wilson, the world's deadliest assassin.”
Military experiment activated 90% of his brain — tactical analysis, weak-point reading, and battle prediction all at superhuman level.
Lost eye doesn't regenerate, but ordinary wounds heal far faster than a normal human — giving him an edge in prolonged fights.
Mastery of sword, throwing blades, and long-range weapons alike — one of the few opponents Batman prefers not to face head-on.
The consummate professional. He treats emotion as a weakness and works to eliminate it — yet his relationships with his children crack that armor repeatedly. A strict principled man (honor the contract, always), he carries the irony that those same principles destroyed his family. He defines himself not as hero or villain, but as reality.