Kase/Kamen Rider Siren

Kase, better known as Kamen Rider Siren is one of the few survivors of the Ventara battle with Kamen Riders and Xaviax. She was supposedly destroyed but somehow made it after saving a then, disoriented Len, her boyfriend.  She is very serious about stopping Xaviax and initially doesn’t trust Kit or his ability to handle the vigorous task of defeating the general.

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Thus causing somewhat of a rift in their side and angering Kit. Kase is one of the best fighters among the riders, maybe better than Len as Xaviax insinuated but insisted that Len was the best Kamen Rider.

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Kase in Siren form can manipulate her physical body and transform into feathers, a very deceiving and clever battle tactic. In battle with Wrath and Strike, Kase was vented by Kamen Rider Strike and got sent to the Advent Void. In her absence Maya filled in as Siren until Kase returned from the void and resumed her duties. Kase with the aid of the other riders have defeated Xaviax and is still serving as a rider and works with Len, Kit and the others to take down evil in other worlds behind the mirrors.

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