Arena Tycoon Greta/Anime

Greta appeared in Wheel of Frontier. As in, she is the Frontier Brain of the Battle Arena, and runs a karate dojo where she trains alongside her dozens of apprentices. Unlike the, however, she is a expert. Before a, a wheel is spun to decide how many Pokémon will be used in the match. While the matches are Single Battles, the other Pokémon that are intended to be used remain outside of their Poké Balls until they faint.

spun a two-on-two match. His was defeated by Greta's  in the first round. Ash's Snorlax, using its impressive endurance and equally powerful attacks, went on to defeat both of Greta's Pokémon and earn Ash the Guts Symbol.

She reappeared in a flashback in A Pyramiding Rage!.