NAMCO x CAPCOM
He appeared in devil form in the crossover strategy RPG "Namco × Capcom", with several other Namco and Capcom characters. Kazuya made a playable debut in human form—also transforming into his devil form—in the sequel of "Namco × Capcom" successor, "Project X Zone 2", teaming up with his son, Jin. Kazuya's image is downloadable content in Namco's "", and it appears as in "Taiko: Drum Master V Version". Although he does not appear, Kazuya is mentioned in the crossover fighting game "PlayStation All-Stars Battle Royale".