Martin Greywhinder  is the co-founder of M&A HarmonyToys, M&A HarmonyPlay Production. He has curly black hair and a short beard and mustache. His body is slim, yet slightly muscular and he has bags under his eyes, always having a tired or annoyed look on his face. He mainly wears a white button up shirt, black tie, black dress pants, and black shoes and clown makeup. Despite how he looks, he loves his job and is incredibly intelligent. He co-owns HarmonyToys with his brother, Arthur Greywhinder.