Cynthia

Cynthia is the Pokémon Champion of the Sinnoh region in the anime series (primarily appearing in Pokémon the Series: Diamond and Pearl and later in Pokémon Journeys). She's widely regarded as one of the strongest trainers in the world, with an overwhelmingly powerful battling style centered around her signature Pokémon, Garchomp (which she raised from an Egg).

In terms of personality, she's strong, independent, confident, and always eager for a good challenge—she never holds back in battles. Despite her imposing presence and queen-like dignity on the battlefield (combining raw power with precise, graceful tactics), she's surprisingly down-to-earth, compassionate, humble, and kind-hearted. She often gives helpful advice to defeated opponents, cares for injured Pokémon, and enjoys battles for the thrill rather than just victory.

She's also deeply interested in Pokémon mythology, ancient ruins, and history, which ties into her role as a researcher of myths (similar to her game counterpart, though the anime emphasizes her mentoring and crisis-handling side, like aiding against Team Galactic threats). Her grandmother is Professor Carolina from Celestic Town.

Overall, she's portrayed as a mature, admirable figure who serves as both a role model and a formidable opponent for Ash and others.