Yurusen

"Booo!" - Everytime Yurusen wants to make an entrance without Takeru noticing it.

Yurusen (ユルセン Yurusen) is a character of Kamen Rider Ghost. It is the assistant of Edith who trains Takeru Tenkuuji on how to use his powers. Yurusen would most of the time immediately pop up if the name is summoned by Takeru. Yurusen is also capable of summoning the vehicles of Ghost whenever it is needed. In the end of the series, Yurusen's true form was revealed to be a cat, who was with Edith and they shared their life support in the Daitenku Temple. Yurusen is voiced by Aoi Yuuki.

Ghost Driver

The Ghost Driver (ゴーストドライバー Gōsuto Doraibā) is the transformation device for the Kamen Riders in Kamen Rider Ghost, such as Kamen Rider Ghost, Dark Ghost, Specter, along with Zero Specter. The gimmick of this belt is the Eyecons.

The one who carried the unfinished model of the Ghost Driver was Chikara Saionji, who unsealed Parka Ghosts and did the basic Eyecon concept. Due to it being incomplete, it was unable to make people able to transform. And according to Edith, it is compulsory to collect 15 heroic Eyecons in order to grant yourself a wish. The Ghost Driver is voiced by m.c.A T.

Takeru Tenkuuji

"I am Takeru Tenkuji, I was killed by a Gamma on my 18th birthday" - Takeru in every opening of Kamen Rider Ghost.

Takeru Tenkuji (天空寺 タケル Tenkūji Takeru) is the main character of Kamen Rider Ghost. He uses Eyecons along with the Ghost Driver to transform into Kamen Rider Ghost. He is portrayed by Shun Nishime.

History

In episode 50, the now alive Takeru is continuing his studies at school. He later mistaken Kamen Rider Ex-Aid to be evil, but after getting to know him, they befriended each other. Ex-Aid jumped away and break open a block, which contains the Ex-Aid Eyecon for Takeru to use. 

Takeru appears in Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Rider as one of the main Riders. He is seen still in school before being interrupted by Onari, saying there's some trouble. Once arriving at the seen, he sees Pac-Man Bugsters attacking people. Takeru prepares to transform before meeting up Emu Hojo again, recognizing him from his Gamer Driver.