She has a sweet personality around Courage, but has a mean and uncaring personality around Eustace, a kind of love-hate relationship. She is the CEO of Growth Industries. She is cruel to her son calling him a "stupid boy".
She loves Courage more than Eustace. She calls her son "stupid boy", similar to the way Eustace calls Courage "stupid dog". She wears a wig, as found in Scuba Scuba Doo. Her real name is unknown. Ma Bagge works at the Growth Industries. She lives in the trailer park. She is voiced by the late actress Billie Lou Watt. Billie Lou Watt is also well known for her role as Astro in the english dub of "Astro Boy", an iconic 1960's anime created by Osamu Tezuka. She's one of the few people who Muriel openly dislikes.