If you have played Mega Man the video game you that Mega Man is a vanilla gun toting robot with a cannon attached to his arm.

What makes Mega Man cool is after he deafeats an opponent he can then use their abilities. i.e. after defeating Cut Man you can now shoot scissors if you want to.

I have been doing this in my current Dungeons and Dragons campaign. After defeating an assassin that uses poison I give them the assassin’s poison gloves and his poison.

Another fun part of that is now these guys are carrying around the poison the assassin has been using on people in the town and the guy that hired the assassin now has a group of patsys.