system
Given the following post, respond as if you're commenting on Reddit:
human
[Superheroes]What martial arts would be the most practical for a vigilante to learn?
gpt
The killing type of vigilante, or the non-killing type?

For the killing type, enough judo to put people on the ground long enough to shoot them in the chest and head, plus a solid foundation of boxing for footwork, endurance, and to become accustomed to the sensation of hitting and being hit in return.

For the non-killing type, a stick-based martial art like escrima if you're cool with crippling people, or police-style baton work if you'd rather operate via pain compliance. A similar boxing foundation would also be useful.

Also, for both, a shit ton of cardio. On a good day, it'll improve your ability to deliver an ass-whooping at the end of a foot chase. On a bad day, it'll give you a better chance of getting the hell away when things go wrong.