Kyoji Murakami

Kyoji Murakami (村上 峡児 Murakami Kyōji?) is the temporary chief of Smart Brain after Eiichi Toda's death. He is also known as the Rose Orphnoch (ローズオルフェノク Rōzu Orufenoku?) and as Riotrooper V2 in Lost World.

Kyoji Murakami
Murakami was the one who assigned Lucky Clover to do his dirty work until Hanagata took back the company and gave control to Kiba. Despite losing his place in Smart Brain, Murakami had a trump card in the Orphnoch King, whom he had waited for and learn of his human host. To that end, Murakami attempted to abduct Teruo, fighting the Riders on his own and barely escaped their attacks. In his weakened state, Murakami offered his life to Teruo to awaken the Arch Orphnoch so he can correct the Orphnochs' genetic instability.

Paradise Lost
In the alternate conclusion shown in the SIC Hero Saga, Kamen Rider 555: Lost World, Murakami hatches a plan which is to turn the whole Earth populations into Orphenochs by dispersing the blue-colored flower petals. He also had created the Riotrooper V2 Gear which he used in combat. Armed with the Faiz Edge, he quickly battles Delta and Kaixa. Both of them smashes his helmet, revealing the face of Rose Orphenoch. With Kaixa and Delta can’t stand up to the Riotrooper v2, they run away with Mari. But then Kusaka grabs Mihara and tosses him back at Murakami, saying that he deserves it for daring to send roses to his beloved woman. Mihara screams that it’s a misunderstanding, and for Kusaka to help him, but Kusaka just sneers and a blue petal lands on his outstretched hand, turning him to ash.

Faiz arrives on the scene and runs into Murakami, now in Rose Orphenoch form as the Riotrooper V2 Gear was badly damaged. Murakami uses Delta’s mission memory to power up a Faiz Edge he had and they fight a bit. Mari then shows up and tosses Faiz the Faiz Blaster. Murakami curses her; He was hanging around the area because he was looking for it. Faiz assumes Blaster Form, and use the Photon Field Floater to cut off Murakami’s head, and goes home.

Murakami’s head is rolling about when the Lion Orphenoch picks it up. Murakami asks him to bring him back to the Smart Brain headquarters, and to recover Delta’s belt at the same time; They’ll be using it to make the “Emperor’s Belts”. The Lion Orphenoch, seemingly a foreigner, speaking in broken Japanese, says that he’ll do so on the condition that he gets one of the belts; Murakami promises him the belt of the sky, the Psyga Driver.

His head is kept alive in a tank with Smart Lady moves him. While trying to find an ideal user for The Emperor Belt, he realized that Yuji Kiba is the perfect Orphenoch for this and orders Smart Lady to disguise as Mari in order to brainwashes him.

With Kiba was proven equally matched with Kamen Rider Faiz Blaster Form, he unleashes Elasmotherium Orphnoch to finishes Faiz but however it failed as Orga sacrifices himself to protect Faiz and Mari.

He was smashed by Smart Lady under orders for his failure in the end. He never had the chance to turn into a 'Rose Head' Orphnoch, dying with a loud scream.