Guyver (Гайвер, ガイバー, 凯普, กายเวอร์) is an anime and manga series created by Yoshiki Takaya in 1985. It includes 12 episodes OVA, 1 OAV, 2 live action movies and 26 episodes TV series. There is no info about Guyver season 2.
Recently David Hayter (Guyver Dark Hero) posted a tweet with photo with Steve Wang. He said it was taken while they had a discussion about Guyver 3 movie.