Johnny is a pretty cool addition to the Marvel U. Too often the writers of various adaptations mistake exactly what kind of character he is though. They "dude-bro" the hell out of him and usually make him a total nimrod. Except that he's not. Yes, he is the youngest of the Fantastic Four, and yes, he's a gear head, and a lady chaser, and he has the arrogance of youth... but that doesn't translate into "hedonist, immature idiot" which is how he comes off on toons and in the two Tim Story FF films. Johnny is younger than the rest but that doesn't automatically make him stupid. Hell, next to Reed most everyone is going to look ignorant, but again, just cuz he's not as educated as Reed doesn't make him dumb. Just cuz he plays pranks still, doesn't mean that he can only operate as a childish, young adult. True, he doesn't have as much to choose from in his emotional tool box given his age so he can express himself awkwardly, but that's different than saying his driving personality trait is that he acts like a foolish teenage all the time. I also think that writers too often mistake "flippant" with "foolish". Johnny has a sense of responsibility and loyalty, and a never say quit attitude when it comes to super heroics. And the dude genuinely enjoys the life of being a public super hero. Who can blame him? I've always wished that Johnny and Spidey could hang out in their civilian ID's. That's an interesting pairing if only because they have similarities and differences to play off of as well.