Kenji Shibata who plays Daimon Tsubasa (Go Yellow) had come to know he has Brain Tumor soon after GoGo Five Airing Ended. He decided to retire for treatment. He kept distance from other cast members and hence they didn't anything about it until 2018 when he was interviewed by the TV Show Bakuhou! The Friday.
Masashi Taniguchi (Kamen Rider Amazon Alpha) who had played Nagare Tatsumi / Go Blue had tweeted that he is going to work once again with his Kyuukyuu Sentai GoGo Five Co-star Yuuko Miyamura (Kyoko Hayase / Zeek-Jeanne) after 17 years.