Immediately, I thought of Helen from Sonic X, so, Sonic X is my answer; she's in a wheelchair instead of crutches, but I use both so I always found her so fun of a character
Getting to go on such exciting travels, I found it annoying a lot as a kid how most characters like that would be on the sidelines, but in the future (present...?), Helen is one of the most integral characters, and she even has a hotrod that she mischeviously speeds around
Word: DJ!