Britomart is a Manifestor who can manifest a "carapace" armor around herself. The problem is that the carapace forms right against her skin, and doesn't dissolve on its own -- Betty has to peel it off when she no longer desires it, pulling every hair off her body in the process. As a result, Betty is totally, full-body bald -- she doesn't even have eyebrows or eyelashes. In regular situations, she wears a pageboy-style wig and false eyelashes, and draws her eyebrows with makeup. Without the carapace, she looks like a cute, freckle-faced blonde; with the carapace, she looks a bit like a Guyver. Her carapace also gives her some jumping ability, and he can manifest a claymore-like sword.
She's one of the heavy hitters in her Basic Martial Arts section. But she's also a real sweetheart.
She received the Sensei's Achievement award on promotion to Sophomore.