Secondary Rider of [[Kamen Rider W]].

[[Terui RYuu|Terui Ryu]] is a young police superintendent in charge of investigating paranormal crimes. However, he loathes his host city, and only does his job to find the "[[Isaka Shinkuro|Man]] with the [[Weather Dopant|W]] [[Gaia Memory|Memory]]", who killed his family.

Unlike [[Kamen Rider Double|Double]], Ryu only needs himself to turn into Accel, a red Rider with the ability to transform into a motorcycle. He also has the ability to transform into the blue, speed-oriented Trial Form, as well as the all-around Booster Form but only in W Returns.
kamen rider accel