Arena Tycoon Greta

Arena Tycoon Greta is a Frontier Brain in the Pokémon anime (specifically during the Battle Frontier arc in Pokémon the Series: Ruby and Sapphire / Advanced Generation). She runs the Battle Arena, a facility styled like a martial arts dojo where challengers battle under unique rules (such as a judging system based on excitement and technique rather than just knocking out opponents).

In the anime, she's portrayed as a spirited, hot-tempered, and energetic young trainer who idolizes Fighting-type specialists like Gym Leaders Chuck and Brawly. She specializes in Fighting-type Pokémon (using ones like Hariyama and Meditite in her battle), and she loves seeing opponents get pumped up and passionate during fights—she gets fired up herself and can be blunt or frustrated if she senses weakness or lack of spirit.

She appears mainly in the episode "Wheel of Frontier!" (also known as AG149 or similar numbering), where Ash challenges her at the Battle Arena, leading to an intense match that earns him the Guts Symbol upon victory.

Overall, she's depicted as a tough, sincere, and martial-arts-loving competitor who values guts, determination, and lively battles.