Rintrah went to Kamar-Taj and was trained to become a Master of the Mystic Arts. In 2025, Rintrah was present in Kamar-Taj when Doctor Strange and Wong brought America Chavez there. He listened as Wong explained the history behind the Scarlet Witch and when Strange told them that she had taken a town hostage. He and the rest of the Masters then prepared for battle. When the London Master and Hong Kong Master arrived through portals, Rintrah announced their arrival.
6 inches tall,