Opacho

Hao's most loyal ally, was a malnourished baby in South Africa when Hao found her. In the English dub of the anime, Opacho is referred to as "he." Adopted and raised by Hao, Opacho follows Hao almost every where he goes. Hao often confides in Opacho about his plans, as well as about Yoh and his power. Opacho has strong, though still a bit unrefined powers, including clairvoyance and projecting illusions. In the manga, she can read minds as well. She is also part of Hao's team (Hoshigumi) in the Shaman Tournament, though her attack power is never revealed. Although Opacho supports Hao loyally, near the final episodes of the anime series, (once Hao obtains the Great Spirit's Power), Opacho notes that Hao has made a change for the worse and flees from him. Opacho's last anime appearance is in episode 64 watching the destiny star fly by. She is one of the few survivors of Hoshigumi. Opacho's spirit companion is named "Mama."

(Source: Wikipedia)