She is vengeance. She is the night. She is Mare-Do-Well!

Oh yeah, she's also the local elementary school teacher, Cheerilee.

Together with her sidekick Applebloom she's going to dish out some educational justice. No matter who she faces, she will fight to protect her students and the innocent ponies of Ponyville. Dr. adorable, Dr.Octavia, Screwloose, Pinkamena, she will take them all on if that's what it takes to keep her fellow citizens safe.