|Hometown:||Unnamed ninja village|
|Family:||Ippei (older brother), Nihei (older brother)|
|Friends:||Ash Ketchum, Serena, Clemont, Bonnie|
|First Appearance:||A Rush of Ninja Wisdom!|
|Voice actor:||Chris Patton|
Sanpei is a recurring character appearing in the XY series.
Season 17: XY
Sanpei first appeared in A Rush of Ninja Wisdom! where he criticized Ash and Froakie at their training. He disappeared after that and when Ash found him again, Ash challenged him to a battle which he accepted. Ash used his Froakie against Sanpei's Frogadier. Frogadier managed to dodge many of Froakie's attack and at last defeated it.
Season 18: XY Kalos Quest
Sanpei returned in A Stealthy Challenge! with his newly-evolved Greninja.
|XY017||A Rush of Ninja Wisdom!|
XY Kalos Quest
|XY052||A Stealthy Challenge!|
Sanpei's name is based on the name "senpai," just with the "a" and "e" swapped.
|Pokémon XY & Z|
|Main characters||Ash Ketchum - Bonnie - Clemont - Serena - James - Jessie - Monsieur Pierre - Nurse Joy - Officer Jenny - Professor Augustine Sycamore|
|Main character's Pokémon||Ash's Frogadier - Ash's Hawlucha - Ash's Noibat - Ash's Pikachu - Ash's Talonflame|
Clemont's Bunnelby - Clemont's Chespin - Clemont's Dedenne - Clemont's Luxray
Serena's Braixen - Serena's Eevee - Serena's Pancham
James' Inkay - Jessie's Gourgeist - Jessie's Wobbuffet - Team Rocket's Meowth
|Supporting characters||Alain - Aliana - Assassin - Bryony - Celosia - Chief Nurse - Hanzo - Heidayu - Ippei - Kagetomo - Lysandre - Mable - Nihei - Sanpei - Shinobu - Tsutomu - Xerosic|