...another smart idea I got when building this story is that the protagonists (who would no more be tweens, but rather teenagers) would usually have either abilities like the ones they gain in the book they appear in, or have an ability related to the book they appeared in. All there's left to do is explore what can be done with those abilities.
As an example, Skipper Mathews (protagonist of Attack of the Masked Mutant) is flashed by a strange ray when he first enters the Mutant's HQ, and at the end it's revealed that this ray turned him into an ink-bleeding comics character. Well, he perfects his abilities to the point of using that ink and, say, change his body's consistence to become more liquid or solid, he can also streetch his anatomy (by making only a part of his body less solid), he can reattach limbs that were cut off him...
Another example: Margaret Brewer (from Stay Out of the Basement) never gains abilities in the book. But adaptation lets me change some elements; what if something happened in the basement (which is her father's laboratory to experiment with plant DNA spliced with living life forms), something that made her gain plant-based powers?
I also have one who's based on Tim Swanson (from Bad Hare Day). His only true superpower is to see through illusions. Other than that, all his abilities revolve around using a magical set of stage magic props, and he can use sometimes in awesome or wacky ways (as an example, pulling ridiculously long lines of handkerchiefss from his sleeves *almost like Spider-Man's spiderweb ability, except more colorful and not as sticky* to wrap the opponent with them and stop him from moving). The set comes with a Hammerspace hat.
Thinking of the characters' superpowers was probably one of the best tasks in the making of the story, as I could literally try to pit them against some of the villains and see how they could use these abilities to win. Sometimes the original books' twist endings are taken into account, other times they're igored (as an example, The Blob That Ate Everyone; that ending would make no sense in the adaptation. But the protagonist, however, might have an ability worth exploring as a hero.)
edited 26th Aug '12 6:00:36 AM by Iamabrawler