Nico Saiba

Jun Maehara (前原 淳 Maehara Jun) was the scout of the Nozama Peston Service. After his death at the hands of Dragonfly Amazon he was revived by transplanting Amazon Cells into his corpse. He uses the Amazons Driver to become Kamen Rider Amazon Sigma (仮面ライダーアマゾンシグマ Kamen Raidā Amazon Shiguma).

Character History
Jun is ultimately killed during the exterminators' confrontation with the Dragonfly Amazon, formerly Ryusuke Otaki, attempting to get through to his former comrade only to be mauled by the hungry Amazon. Mortally wounded, Maehara takes solace in that, though fated to die at the hands of one of the beasts, it was Otaki who did so, before he dies.

He is later revived and given a third Amazons Driver, allowing him to transform into Amazon Sigma, an Amazon similar in appearance to Amazons Alpha and Omega.