This scientist was first seen in the episode Bullseye!, singing Evil Tonight with the other scientists. He later appeared in Phineas and Ferb Save Summer, taking part in the first and second brawls between the scientists and agents. He later ran for his life along with the other scientists.
Unlike most of the other scientists, this particular one wore a brown coat instead of a white one. In the beginning of the song Evil Tonight, a scientist who looks exactly the same as this one can be seen in the far left, in the same shot this one was in.