Emily from the Emily The Strange novels.
Emily's character stands for individuality, embracing that you're different or strange, etc.
Or maybe I should say that Lucifer (aka The Devil) from The Bible is inspiring since he stands up for believing in himself? ;P
I don't know. There are a lot of inspirational characters in the books I read.
Riddler and Two face From Batman and Data from star trek
Beatrice Prior from Divergent, I guess...maybe Hazel Grace Lancaster from TFiOS?
Ben, Zan, and Peter from Half Brother, Beatrice Prior from Divergent/Insurgent, and all of the members of One Direction from the preview of the movie.
Either Jen Talbot from the Shadow Children Series, Luke Garner from the Shadow children series, or Nina Idi from the Shadow Children Series.
Homburg Molly from the Looking Wars Trilogy by Frank Beddor. Look up the series. It's awesome. Also the parellel graphic novel series Hatter M.