Goushima aka Cyborg Soldier Level 2 is Iwao Himuro's right-hand man and the secondary antagonist of Shin Kamen Rider: Prologue.
Shin Kamen Rider: Prologue
An outdated cyborg model working for ISS, Goushima was sent after Shin. He was killed when the superior cyborg cut off his head, revealing a bomb that promptly self-destructs.
Kamen Rider World
Cyborg Soldier Level 2 was revived by Shadow Moon along with four other monsters, Sai Mutant, Agito, Garai, and Zu. He was defeated along with his fellow revived monsters by Kamen Riders ZO and J.
OOO, Den-O, All Riders: Let's Go Kamen Riders
Due to a change in history caused by Ankh leaving a O Medal behind in 1971, Shocker achieved its goal of world dominion by using the medal to create a new kaijin called Shocker Greeed, who defeated the Double Riders. Thus members from the various groups that would had manifested in the normal timeline after Shocker's destruction instead joined Shocker, among those included Cyborg Soldier Level 2. As more and more Kamen Riders started appearing to fight Shocker's forces, Shin fought against Goushima once more.
Kamen Rider × Super Sentai: Super Hero Taisen
Cyborg Soldier Level 2 appears as one of the members of the revived Dai-Shocker.