[2][3] However the project was cancelled in 2019 following the death of its intended showrunner, Yu Yamamoto.
Each was also advertised as being the "robot anime version" of another popular fictional motif.
In each series, the cast of heroes were voiced by Kazuyuki Sogabe, Kaneto Shiozawa, Katsuji Mori, and Yōko Asagami.
Music was also an overarching motif in the series, with the eyecatch always featuring the team leader playing some sort of musical instrument (Blaster Kid and a double-neck electric guitar in Braiger, Billy the Shot and a keytar in Baxinger, and Nukiuchi Rock and a harmonica in Sasuraiger).
Yū Yamamoto later revealed that he had named the series after Sony's flagship SL-J9 Betamax video player, which at the time was out of his price range.