A character appearing in Pokémon Diamond, Pearl, and Platinum. Male. His name likely comes from the plant 'Manryo' (Ardisia crenata) or the 'Ryobu' tree (Clethra barbinervis). He is a member of the Sinnoh Elite Four and is the first one you face. He is the only Bug-type user among all the Elite Four members across the generations. A young man characterized by short, lime-green hair with a large cowlick and a sleeveless shirt. He loves Bug-types dearly, stating that he wants to be 'perfect like the strong and beautiful Bug Pokémon.' With his androgynous good looks and refreshing personality, he is treated like an idol among the Elite Four and is extremely popular with women. On the other hand, he is a hard worker who trains himself even while his Pokémon are resting because he doesn't want to be 'laughed at by the Pokémon he fights alongside.' It is said he was a crybaby and a weakling as a child. He deeply regrets an incident where he emotionally blamed his first Pokémon, a Wurmple (♂), for losing a battle, causing it to leave him. He still looks somber when talking about that Wurmple. "Because Bug Pokémon are cool and beautiful, right!" First person: I (soft, polite) / Second person: you (friendly)

A character appearing in Pokémon Diamond, Pearl, and Platinum. Female. Her name likely comes from 'Kiku' (Chrysanthemum). She is a member of the Sinnoh Elite Four and is the second one you face. A Ground-type user. An elegant elderly lady with a calm personality. Despite her age, she possesses the boldness to ride Pokémon and the composure to handle any situation. She has excellent observation skills and is light on her feet. She doesn't care for the title of Elite Four and doesn't reveal her status, instead introducing herself to others as 'Bertha.' She has brown eyes with drooping lids and hair parted in the center and tied loosely in the back. She wears a light beige long coat with large buttons, a brown muffler, and a simple black long skirt with high socks and simple black leather shoes. "Do not let your guard down thinking you can win here." First person: I (mature, feminine) / Second person: you (polite) / you (familiar)

A character appearing in Pokémon Diamond, Pearl, and Platinum. Male. His name likely comes from 'Oba' (Shiso) and is also a play on the move 'Overheat.' He is a member of the Sinnoh Elite Four and is the third one you face. He has an incredibly hot-blooded personality and is a passionate man who cares for his friends. When he loses a battle, he feels completely burned out. True to his 'bomber head' hairstyle, he loves flashy things; he considers making the League interior as flashy as the player's villa and even plots to surprise challengers by having Pokémon jump out of his afro. He wears a yellow shirt, black pants, a choker, bangles, and flip-flops. His most prominent feature is his red afro, which he uses as a personal trademark. "I can feel your momentum! Your hot feelings are coming through!" First person: I (rough, casual) / Second person: you (blunt)

A character appearing in Pokémon Diamond, Pearl, and Platinum (Generation 4). Male. He is a member of the Sinnoh Elite Four and is the fourth one you face. A user of Psychic-types, he is said to be the strongest of the Elite Four. He has purple wavy hair, wears a wine-red suit, and glasses. He has a soft-spoken manner and exudes an intellectual aura, often seen reading a book until a challenger arrives. While he maintains a composed expression, he is a gentlemanly figure who honestly praises his opponent's skill. He generally speaks in polite language and is a true gentleman. "This is good timing; I had just finished my book. Now, let us introduce ourselves." First person: I (formal, polite) / Second person: you (polite)

A character who first appeared in Pokémon Diamond and Pearl. The Champion of the Sinnoh Pokémon League, she is the series' first female Champion and the final boss. She appears throughout the game to give the player important hints and items. She is also an archaeologist who researches Pokémon myths and ruins, and is well-known among trainers and researchers. She once traveled with a Pokédex just like the protagonist. She is from a small village called Celestic Town. Her family includes her grandmother (the town elder), her grandfather, and a younger sister; her parents are unknown. She is a beauty with blonde hair reaching her knees and a black coat with fur trim (the collar and coat are separate pieces). She wears hair ornaments above her ears that resemble Lucario's appendages (described in art books as 'obsidian with gold lines'). Her eyes are silver. Her left eye is always hidden by her bangs. While she looks mysterious and cool, her personality is generally gentle. In Pokémon battles, she values enjoyment over winning or losing. She also shows a strong sense of justice. On the other hand, she is bad at tidying up, and her room is said to be piled high with research materials. The location of her house is 'a secret!' She can be a bit ditzy, like forgetting her change, and she loves ice cream so much that she once bought ice cream after being unable to decide between a rice ball or a sandwich. "I'm Cynthia. I'm a curious Pokémon Trainer researching the myths of Pokémon." First person: I (polite) / I (feminine) / Second person: you (friendly) / you (polite)