While still an example of "cripping up," Mask focuses more on the character development of Rocky (Eric Stoltz), a teen with a facial deformity. His mother (Cher, in an iconic role) is also a fierce advocate for her son, refusing to accept his school's discriminatory practices. Rocky is not the victim in this movie; he's just a disabled teen trying to get through high school, making him less cartoonish and more related to actual disabled teens who watch the movie.
If you're interested, disability studies scholar Paul Longmore wrote more extensively on this in his essay collection, Why I Burned My Book and Other Essays on Disability.