|This article is about a/an kaijin in Kamen Rider Super-1.|
As Yuuki Murayama, he was working with a Dogma scientist to perfect Artificial Cell X9, a sentient manmade organism that eats away at anything it comes to contact with. His partner fearing the disastrous purposes it would be used for if it remained in Dogma's hands, decides to flee with the hidden case its in. He is promptly fatally wounded by JawsWani but not before the case is stolen by a greedy bystander, thinking something valuable was in there as the case was made of pure gold. JawsWani reluctantly forms an alliance with Kazuya to retrieve the case from the civilian should he unwittingly release the case's contents or let the dormant Artificial Cell X9 activate on its own (and thus instantly consume all living life - including Dogma) in 30 hours. Finally seizing the chest and revealing the Cell was meant to be installed into his body the entire time, JawsWani proceeds to have Dogma scientists upgrade him. After taking in the Artificial Cell X9, he changed from the 1st (Ⅰ世 Issei) form to the 2nd (Ⅱ世 Nisei) form. Kazuya manages to freeze him with the Hot/Cold Hand (cryo) before he causes untold destruction with his new power and finishes him with Super-1's Super Rider Spark Kick. Cell X9 is obliterated in the process.
Being an alligator he can swim and appear from water, breaking the surface with bubbles as he does so and bite with his large jaw. In his new form, he can liquidize his body into Artificial Cell X9 to deteriorate the environment (but he can localize its effects), as well as having his body course with massive electricity. This makes invulnerable to Super-1's Hot/Cold (flame) Hand and Electric Hand. He also can perform the "Jaws Shock", an electrical surge when he bites his opponents.