I need some help, ya'll.

I never had Cobra Commander in my dio in terms of a role that could be counted. I'm about to include him in the upcoming "DOOMSDAY MACHINE" story. But I don't know how to make up a persona for him. I can't help but lean on the earlier Marvel series AND the cartoon. But I want to make him special in my Joeverse. Not a clown. Not a buffoon (like the Batman's Joker from the old Adam West days). I want to make him angry and evil but he's gotta be 3-dimensional. He needs a reason for being the way he is.

Help me out, please???