Actor Toshiaki Karasawa (24 JAPAN, LAST COP) for starting his career as Suit Actor for Kamen Rider, Super Sentai Series etc., He had played Shocker in his early days and later got the chance to play Riderman in Kamen Rider ZX Special.
He had appeared in Wideshow Sukkiri to promote his upcoming Drama "Voice II" and as part of the promotion he had given a quiz to Nemesis drama stars Suzu Hirose & Sho Sakurai. The quiz was related to Toshiaki Karasawa's early career as Suit Actor. He asks them about a cause for moving heavily during the Shocker filming and he also mentions that he was scolded for that.
Both Suzu Hirose & Sho Sakurai couldn't get the correct answer. Toshiaki Karasawa reveals that as the Shocker's costume layer being, all the suit actors were feeling cold. They couldn't resist it and started moving heavily to warm themselves up.
He also mentioned that during those days most of the filming locations were like over the cliff, dam.