Baby Mario Love/Koopenstein
- Episode aired Oct 9, 1989
- TV-Y7
- 21m
Dr. Koopenstein starts the trouble by trying to steal the Marios' brains for his new invention, and then he really turns into a monster.Dr. Koopenstein starts the trouble by trying to steal the Marios' brains for his new invention, and then he really turns into a monster.Dr. Koopenstein starts the trouble by trying to steal the Marios' brains for his new invention, and then he really turns into a monster.