Magensha is the leader of Uruha Ma and is the older brother of Gashakura.

Magensha appears as a huge being, even larger than his brother Gashakura. His entire body is covered in a magenta cloak. He wears a horned helmet with a face mask bearing an eye symbol on it, with long, blonde hair attached to the mask. Lastly, his shoulders are covered in large armor. This appearance is revealed to be the puppet at his control.

However in reality, Magensha is a frail looking man with long, green hair with his body covered in a cloak. According to Kadotsu, Magensha copied his looks. In the anime, his long hair is dark capri blue and wears a white long robe with his puppet's eye symbol embedded on his robe.

(Source: Flame of Recca Wiki)