Prince Dex Stewert is the main protagonist of the series Saban's Masked Rider. He is able to transform in to the Masked Rider when Dex yells out the phrase, "Ectophase Activate!". He is a prince of the planet Edenoi, homeworld of Alpha 5, and the current Masked Rider: the guardians of Edenoi. As with all his race, he possesses a gem in his forehead that channels various powers, including broadcasting his memories into thin air.
Related Post : Source : Wikipedia / kamenrider.wikia