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(Japanese: センタ Senta) is Cissy's assistant and younger brother. He appeared in the episode Fit to be Tide. He was not given a name in the English dub.
Senta lives on Mikan Island with his sister. He is known for playing practical jokes on visitors to the Mikan Gym, including Ash Ketchum. He thinks very highly of his sister and the rest of the Trainers in the Orange Crew. Even when Ash tells him of his placing in the Indigo League, Senta tells him to not even compete in the Orange League, saying it was tougher unless he was an elite Trainer.
Senta has at least one unknown Pokémon as he held up a Poké Ball when he agreed to battle Ash before being interrupted by Cissy.