Only one Magma Admin, Tabitha, ever appeared in the anime. He made his debut along with Aqua Admin Shelly in A Three-Team Scheme, where he was mistakenly referred to as "Field Commander Harlan"; this was corrected in subsequent episodes. He led a squad on a mission to Dewford Island to find the Cave of Origin. It was revealed that he was carrying the Blue Orb (mistakenly referred to as the Indigo Orb) with him at the time, though it was never shown on-screen.
In the Ruby & Sapphire chapter, there are three admins of Team Magma known collectively as the Three Fires. Courtney and Tabitha are directly based on their game counterparts while Blaise is exclusive to Pokémon Adventures.