Double

Double from Spark the Electric Jester 2! (and 3 kinda)
I tried to fit his swords in under his arms, but the hilt might be impossible to see in-game. Just trust me, there's a sword in that sheath!
Also, if you take off his 'hat' layer, you can see what he looks like when he removes his eyepatch/bandana thing!

He used to purely be a purpose-built robot, designed as a guardian for a rich Formie's estate. After the owner passed alone, he house went to no one, and the robot sat there, still fulfilling his task. One day, a robber broke into the estate, and the robot ended the Formie in an instant. In that moment, he realized his true reason to live: to satiate his blood-lust. The robot went looking for more to kill. Eventually, he ran into a worker robot who had been shot. He recruited the poor robot and they gave each other names: the worker robot being named Flint, and himself, Double. Eventually, Flint found out about Double's blood-lust, and the two started to fight. It ended in a draw, and the two parted ways. They would, purely by fate, be brought back together as a trio (alongside Float) as Double excitedly accepted an assignment; to kill Fark the Electric Jester.

Spark and his games were made by LakeFepard and are available through Steam. They are the best 3D Platformers I've ever played, and you should check them out!