You can use comics, movies, and tv for your answer. Here's some possible suggestions:
Black Panther
Captain America (Steve Rogers) - He fought in WWII and against almost every powered villain on Earth.
Colleen Wing
Daredevil
Deadpool
Elektra
Ikari - A dark clone of Daredevil with sight.
Iron Fist
Karnak
Lady Bullseye - She's even better than Bullseye.
Mantis - She's a Master of the Kree Arts.
Master Izo - He trained Stick who trained Daredevil.
Psylocke
Shang Chi, Master of Kung Fu - He's my favorite.
Spider-Man (Spider Clan)
Stick
Taskmaster
White Tiger
Wolverine
Wong
X-23
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