Magis

Magis (マジス, Majisu), also known as GoseiGreen (ゴセイグリーン, Gosei Gurīn), was a member of the Seaick Tribe, the former partner of Hyde (GoseiBlue), and the second Gosei Angel of the sea.

Biography
Sometime prior to episode 1 (as seen in episode 10), it was revealed that Magis had saved Hyde's life by transforming into Gosei Green and fighting Kurasunigo of 5000°C; but although he saved Hyde's life, unfortunately he paid the price of his own life. In Episode 10, it was also revealed that Hyde will leave flowers at the last place where Magis died in his arms.

Unlike other dead heroes who where replaced, Magis did not fight in the Great Legend War. In-universe, its possible he did not fight because he did not really fight on Earth, and his true home world was the Gosei World.

Gosei Green
Magis presumably transformed into Gosei Green by putting a GoseiGreen Change Card in his Tensouder. Gosei Green is a Seaick Tribe power wielder with the motif of an unidentified (presumably aquatic) creature.

Arsenal

 * Tensouder
 * Gosei Cards
 * GoseiCard Buckle
 * Gosei Blaster

Mecha
While Gosei Green presumably had his own Headder. As the Goseigers fulfilled the legend of the "five stars" by acquiring the Gosei Mechines, Gosei Green never had his own Gosei Machine.

Portrayal
Magis is portrayed by Yousuke Ito (伊藤 陽佑), who previously portrayed Sen'ichi "Sen-chan" Enari/DekaGreen in Tokusou Sentai Dekaranger. As Gosei Green, his suit actor was Yasuhiro Takeuchi (竹内 康博), who also served as suit actor for Gosei Red.

Trivia

 * His death is the reason of Hyde being the only Seaick Goseiger.
 * A counterpart in Megaforce has yet to be seen, possibly because the death scene would be upsetting for young viewers.