Bleh, Just put the Goons in a cage of sorts. DevanJazz stomps on a crate. And they all fall down a nice little pit to thier freedom. (BURROW UNDERGROUND BOYS!)

As far as enemies, The Dogs would work as guard dogs. Helmuts as guards. Bees are also a nice choce. Possibly crabs? A harder Queen Boss at the end or Say...JazzDevan makes a robot. Did somebody say Bubba? Anyways, not every enemy is a Devan goon. Or at least, they don't have to be in your story.