User:Pat141elite/Sandbox/Did you know?/White Rider Trends

Ever since Kamen Rider Wizard, there is a trend where an involvement of a white-colored Rider. These kind of Riders in particular, however are given an in-series moniker aside from being called by their Kamen Rider designations. On the other hand, they are somehow related to the main protagonist’s friends; leading to the fact that these Riders play very significant roles in their respective series, in such a way their importance gradually increased. With the recent announcement for Ghost's Kamen Rider Necrom, whose color scheme happens to be also white; who could be any of Takeru's friends?

NOTE: The Riders' entry names are according to season and their in-series title.