I actually came up with a character concept today, while TECHNICALLY it's an original character... the sum of it's parts are still very much a Marvel Universe character. You know those characters who get shopped around to various superheroes? The best examples would be Rick Jones and Amadeus Cho. Rick has been the unofficial sidekick of the Hulk, the other half of not one but TWO Capt. Marvels, he's been a Hulk himself, assumed the identity of Nomad for a bit, and is presently A-Bomb. With Cho across Marvel media he's been attached to Hercules, he's been Iron Spider, a super-genius working for SHIELD, and presently he's the Totally Awesome Hulk. 

I'm gonna PM the idea to [@Dedonus] tonight and see what he thinks. 

~KL~