The unnamed Biology Teacher is a minor character in the 2011 revival of Beavis and Butt-Head. She is the biology teacher at Highland High School. She is voiced by Laraine Newman.
She first appears in "Dumb Design", where she teaches evolution to her class. Beavis and Butt-Head don't understand the topic, and, remembering what the Positive Acting Teens told them about not having to learn something if it's too complicated (as well as misinterpreting it), leave the classroom, much to her confusion. Before they leave, they tell her that she's going to hell.
She appears again in "Copy Machine" and "School Test". In the former, she photocopies something from a book on the copy machine, before the duo use it, and is later seen as one of the teachers impatiently waiting for Beavis to be freed from the machine when he's stuck. In the latter, she is one of the teachers that try to help Beavis and Butt-Head pass their test, indicating that she might care about them at least a little bit.
