Title

My new comic book character: Mook. Just one guy but he can make multiple copies of himself. All the copies can share memories/experiences, but it's selective, so if one copy gets hit in the gut, none of the others grab their stomachs.

As the name implies, Mook hires himselves out as mooks to various big-name super-villains (or, I suppose, ethically-comfortable good-guy organizations). When you need an army of guys to get mowed down, call on Mook. Technically, they could use their shared experiences to better co-ordinate attacks, but frankly, Mook doesn't care.

It'd be even better if Mook only copied his mind/memories and could choose different (human) physical forms for the copies. Hydra, AIM, and SHIELD all employ the same guy hundreds of times over without knowing about it.

The Mooks all chip in for the benefits that no super-villain would ever cover and they support the ridiculously lavish lifestyle of several Mooks whose experiences are shared out to the members. You might have a "lifespan" of only a few days, but you'll have done more than one person could ever do in a lifetime.

Mook would make for a fascinating addition simply because their motivations are pretty orthogonal to any standard character's.