Agito

Agito appeared in 1994 movie called Kamen Rider J. Assuming the form of a middle-aged man, the true form of Agito (アギト) is the Lizard Man (トカゲ男 Tokage Otoko), an alligator monster that uses his teeth, claws, and tail as weapons and can easily climb on vertical surfaces.

He was the one who originally killed Kouji and became bent on killing him again upon learning that Kouji was still alive. When the two met again, Agito shed his human form and attacked Kouji, who transformed into Kamen Rider J to fight back. Although Agito overpowered J at first, J successfully took out one of his eyes with a wild punch, causing Agito to try and escape by climbing a nearby cliff. However, he failed, as J leaped up after him and performed a single Rider Punch through his head, causing Agito to fall from the cliff to his death.