Appearing only in Timvisible, the math teacher is scared by an invisible Timmy while he is teaching to a class. Timmy scratches the board making a screeching noise which made this teacher and his students believe that the board is cursed. He is later seen still running scared of the cursed board.
He isn't an enthusiastic teacher because he doesn't earn a good salary. This is revealed when he is making a math problem he says that the result is more than his salary. He is also easily scared.