Zi-O's black, magenta and silver-coloured upgrade RideArmor, themed after a watch, Katakana and Kamen Rider Decade. The visor of this form spells out 'Decade' in Katakana. In this form, Zi-O has access to the powers of Kamen Rider Decade. This form debuts in Episode 14 of Kamen Rider Zi-O.

Male Template asset by