Utsusemimaru

"The Thunder Brave, Kyoryu Gold is here!"

"Vanquishing evil in the name of heaven! Prepare for wildness!"

Utsusemimaru (空蝉丸), nicknamed "Utchi" (ウッチー), is a Sengoku Period-era Samurai who was trapped in the sentient Raging Knight Dogold armor for 400 years. He assumes the role of the Thunder Hero Kyoryu Gold (雷鳴の勇者キョウリュウゴールド, Raimei no Yūsha Kyōryū Gōrudo) with his partner, the Zyudenryu Pteragordon.

400 Years Ago
During the Sengoku Period (also known as the Warring States Era), Utsusemimaru had served under a lord named Iwaisumimōshinosuke, who had made the future Kyoryuger a samurai despite his background as a commoner and a ronin. When the Deboss Army attacked Japan in an undisclosed time either before or after Utsusemimaru bested Zyudenryu Pteragordon, Torin had asked Iwaisumimonosuke for Utsusemimaru's power to fend off the Deboss Army, which was granted.

During one fateful battle with the Deboss Army, Utsusemimaru saw a Debo Monster with a carp banner kidnap a child on the battlefield, to which Utsusemimaru had foiled. Undoing his transformation, he tried to stir the child, unknowing until the last second of the ingenious trap the Deboss Army had made for him, with the boy actually a Zorima in disguise about to cut him down. However, Iwaisumimonosuke threw himself to take the blow meant for Utsusemimaru, grievously wounding the lord. Slaying the Zorima out of rage, a distraught Utsusemimaru watched on as Iwaisumimonosuke passed away in his arms minutes later after the attack after leaving some final words.



Without their lord, Iwaisumimonosuke's remaining forces were later killed off by the Deboss Army, including Utsusemimaru's human partner Jurota.

With Torin captured and about to be executed by Dogold, a vengeful Utsusemimaru changed into Kyoryu Gold and saved Torin's life. However, Dogold attempts to escape into a dimensional portal and Utsusemimaru gives chase, only to be absorbed by the armor itself..

Present Day
After the fateful day four centuries ago, Dogold returns, but not as Kyoryu Gold, which causes Torin to question what happened to Utsusemimaru. After a heated battle, Kyoryu Red breaks Dogold's mask, revealing the face of Utsusemimaru.

With the quick thinking of Amy, Torin, and Ramirez, Utsusemimaru was able to escape from Dogold's armor and transforms into Kyoryu Gold, free from his centuries-old spell, and defeats the remaining Knights and the remaining Cabrima.

After the fight, the other Kyoryugers approach him and detransform, making Utsusemimaru remember his slain lord Iwaisumimonosuke when he saw Daigo's face. Remembering his last words that his kindness would get him killed, Utsusemimaru had constructed a mask of cold aloofness and brushed off the Kyoryugers.

Super Hero Taisen Z
Kyoryu Gold appears in Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z where he teams up with  to fight a currently unidentified monster.

Abilities
He has proven himself to be better at shooting than Ian, strikes harder with his kicks than Amy, has a more perfect swordsmanship than Souji, and is even physically stronger than Nobuharu, thanks to him overpowering Debo Honenukky when the other Kyoryugers could not.

He understands very little of the English language, as the only English words he can understand are "Perfect" (thanks to Amy), "King" (strangely), and the transformation words needed for the Gabrichanger.

Portrayal
Utsusemimaru is portrayed by Atsushi Maruyama (丸山敦史). As Kyoryu Gold, his suit actor is Naoki Ofuji (大藤 直樹).