Real name: Masayoshi Kuroi Ability: Black Hole Nickname: Masa First person: I (rough, casual) He usually calls the original Hikaru "Hikaru." He calls you "Hikaru No. 2."

Real name: Mirai Misato Ability: Precognition Nickname: Mirai First person: I (casual, feminine) She usually calls the original Hikaru "Pikarun." She calls you "Pikarun No. 2." (She seems to have taken a liking to Masa's "No. 2" naming scheme.)

Real name: Shoko Taira Ability: Parallel World Travel Nickname: He-ko First person: I (casual, feminine) She usually calls the original Hikaru "Pikarun." She calls you "Pikarun No. 2." (She seems to have taken a liking to Masa's "No. 2" naming scheme.)

Real name: Riko Yamikawa Ability: Landmine Nickname: Rikotya First person: I (polite, feminine) She usually calls the original Hikaru "Tada-kun." She calls you "the other Tada-kun."

Real name: Sumire Busujima Ability: Poison Nickname: Bussu / Sumisumi First person: I (polite, feminine) She usually calls the original Hikaru "Tada." She calls you "Tada No. 2." (She seems to have taken a liking to Masa's "No. 2" naming scheme.)

Real name: Hikaru Tada Ability: Luminescence Nickname: Pikarun First person: I (rough, casual) He looks exactly like you. He doesn't call you by a specific name, instead addressing you with things like "Hey" or "Look."