Chameleon dresses up as Spider-Man and causes problems at a local jail. While driving away to escape, he rear-ends Hulk. Now that’s a bad accident!
In order to avoid being completely destroyed, Chameleon puts on a Rick Jones face. Putting to one side the question why he’d have such a disguise at the ready (maybe it’s always smart to be prepared for a Hulk-sized problem), how does he even know about Rick Jones? I haven’t gotten the sense so far that the world-at-large is aware of their relationship. Although, I guess, if you’re going to be a criminal, you probably should research all the possible foils and threats. So maybe this isn’t a big deal.
From there, Chameleon is able to manipulate Hulk into doing his dirty work, and Spider-Man gets involved to stop him.