So, Jimmy's the next showcase; so much for the whole "doing all the characters for one show in a row" thing.
Jimmy certainly looks like a pretty interesting character, and once again, I love the amount of detail and references they included. Goddard definitely feels like a more fleshed-out version of what GIR was in the first game*, and the rocket seems interesting; so if I'm understanding this right, you input the rocket's path while charging, and then it automatically follows that path upon release? Well, that's certainly different, and might be something to play around with. One thing I'm slightly confused on: is Jimmy's Up Special the Hovercraft or him using his rocket pack?
Overall, Jimmy looks like he'll be fun to toy around with, though I don't see him being a main quite yet (I don't usually go for the more technical characters), but then again, Zim was kind of similar in the first game and he eventually became my fourth favorite character there, so I guess we'll see what happens.
*I personally wouldn't start calling GIR playable based on this; I think we need to wait until either Zim's showcase or if GIR IS playable, the reveal proper; whichever happens first.