Storm Spriggan Knuckle Unite (B-35) is a Dual Layer balance-type Beyblade from Beyblade Burst, released by Takara Tomy in 2016. Owned by Shu Kurenai, it features right-spin, high recoil, and a unique rubber-and-plastic "Unite" driver that switches between stability and aggression, though it is often hindered by weak burst resistance. Often considered a fun, nostalgic bey for collectors rather than a top-tier competitive choice, it was released in the West by Hasbro as Storm Spryzen S2 Knuckle Unite.