Blocker Gundan 4 Machine Blaster is an anime series aired from 1976 to 1977 in Japan. There are 38 episodes aired at 25 minutes each. It is also known as "Blocker Army IV Machine Blaster", "Blocker Corps IV", "Blocker Army IV", "Blocker Corps", "Machine Blaster" and in Italian version as "Astrorobot Contatto Ypsilon".

• Kazuko Yanaga
• Masane Tsukayama
• Reizō Nomoto
• Masane Tsukayama
• Kazue Komiya
• Yoko Asagami
• Noriko Tsukase
• Seizô Katô