He has a very gorilla-like appearance which he doesn't like to have pointed out.
The Birth of Arale
Main article: Volume 1: The Birth of Arale
In Arale is Akane!?, big boss and his follower comes across Arale who was disguised as Akane at the time and gets called a gorilla by her. As he tries to intimidate her, he gets frightened instead when Arale takes her head off. After Arale fails to imitate his "Pick-And-Lick", she accidentally punches him into the sky hitting a plane and falling back into the ground. The next morning after Arale and Akane switch back to their respective identities, the real Akane is confused when she is politely greeted at the gate of Penguin Village Middle School by the Big Boss and his assistant.
- Pick-And-Lick - The ability to pick his nose with his tongue.