|This article is about a/an ally in Kamen Rider 555.|
Mari Sonoda (園田 真理 Sonoda Mari) is a member of the Ryusei School who was sent the Faiz Gear and Auto Vajin by Hanagata but was unable to use them because she is not an Orphnoch. She insists that Takumi accompany her and use the Faiz Gear to fight Orphnochs.
Mari is not as good-willed as she initially appears, and will often agree with Takumi when Keitarou suggests they use Faiz to help more people. She always believes the good in her friends, even Sawada, and Takumi after she found out they were Orphnochs as well. She dreams of becoming a beautician.
To Be Added
In an alteration to history brought about by Time Jacker Ora transforming Ryuichi Sakuma into Another Faiz on October 25th, 2003, just as Takumi was about to save Mari from the Elephant Orphnoch, the Orphnoch were evidently erased from history while Takumi lost his identity as Kamen Rider Faiz.