Two years ago, I wrote what was pretty much a passion project for me. I called it Robin Warner's Excellent Adventure. In that fanfiction, Robin used time traveling to prevent Joker from shooting and paralyzing Barbara Gordon. Throughout the story, Robin and Barbara would start a romantic relationship, but then Robin would realize the consequences of his actions as Joker goes after The Ink-Blot Dude. I do want to turn it into a movie. I have however thought of an alternative storyline in the same vain as Robin Warner's Excellent Adventure that could make for a good animated movie. In this story, Robin Warner stumbles upon the TARDIS from Doctor Who. The Doctor and one of his companions have come to Robin's dimension to stop some rogue alien. It doesn't matter which incarnation of The Doctor or who his companion is, it wouldn't be canon to the show's continuity. Robin gets curious and "borrows" the TARDIS to go on a multiversal joyride. Robin would use the TARDIS to travel to an alternate DC universe, and he stops Barbara Gordon from getting shot by The Joker. While Babs is grateful and some romance ensues, consequences will arise. Robin will have to deal with the wrath of Joker wanting revenge on The Ink-Blot Dude for sabotaging his plans, and Robin will have to deal with an annoyed Doctor, unhappy that someone took his time traveling spaceship without permission and messed with important events. So yeah, it would be an interesting story. I call it Robin Warner's Joyride. I think it could work.