Mummy Dog (ミイラ坊や, Mīra Bōya, Mummy Boy) Voiced by: Natsumi Sakuma (Japanese); Sean Broadhurst (English) He is Mummy Papa's son, a smaller dog in dungarees and bandages with his skull partly cloven by an axe. He is also a proud hypochondriac like his father. As he suffers from constant migraines, Mummy Dog is very empathetic to those who look or feel poorly, by getting them help.