John Wan Jirou is a dog and a boss in the Boss Rush stage of Jikkyō Oshaberi Parodius ( arcade version). It starts the fight in a dog house and attacks like Big Core in other versions. Once enough damage is done, the house blows off and John him self is exposed. In this state, he stops every time he is hit to scream, "Ai-yee!", making him easier to beat. Eventually the player does enough damage and John falls, allowing the player to move on to Fighting Penclaw.

Jikkyō Oshaberi Parodius
Characters Takohiko and BelialVic Viper and Lord BritishPentaro and HanakoTwinBee and WinbeeSue and MemimMike and RanSoitsu and DoitsuUpa and RupaDracula-kun and Kid Dracula
Stages Hip Hop DiscoSchoolDonburi FieldsEdoSweet LandHigh Speed PatrolFiesta BasePolygon Space (Omake 1) • Grand Prix (Omake 2)
Bosses Mirror BallZiyudeeEnormous Hikaru and AkanePenguin's Mardock Ship (SNES) • Warumon's Flaghship (PSX) • Black TwinBeeBo WinbeeGoemon CompactDecoration Core MK IIKitty TrainHoro Temple Ghost (SNES) • Big Baron Bee (SNES) • John Wan Jirou (PSX) • Fighting Penclaw (PSX) • ShogunFish WallChichibinta RikaBakuteriyaRobot Wall