The popularity of the "villains" of the series reached such a point that in some episodes the robots of the Trio Doronbo are inspired by the drawings sent by the fans, whose photo is shown in the episode and are thanked by Boyakki.
This was the final series to be produced by Tatsunoko Productions company founder Tatsuo Yoshida.
It is the second and longest show in the Time Bokan series by Tatsunoko Productions.