Mya

Mya is a fellow protector of Mystica, like Emmett Lloyd, and has the ability to transform into Land Rider, the sole female Rider.

History
During the time Martin betrayed the other Riders, she quickly managed to throw him down. She was thought to have been lost by both Emmett and Wiseman. She battles Wiseman's phantoms in secret and slowly makes her way back to Emmett. She first appeared to fight off Wiseman's Golems and easily defeats them.

She later crashes the battle between Power Rider and Hydro Rider (before the latter could use his Kick Strike on the former). She battled Hydro Rider, which ends with Hydro Rider retreating. She then attacks Power Rider until Beast Rider appears and reveals that she knows him, when she asks why Emmett is "protecting Wiseman's Riders." It was revealed that Mya is Emmett's girlfriend, and they are overjoyed to see each other alive. She decides to test Marty by battling him, and ends up defeating him in a sparring match. She does not accept Marty as the new Power Rider and feels that Marty is too inexperienced to even be considered a Rider, but trusts Emmett's judgment.

She feels uneasy the next time she sees him as she begins to see the similarities in personality that Marty and Martin have, stating that it was the attitude Marty has that started Martin's betrayal. But after knowing his resolve, she accepts Marty as a Rider and apologizes for her earlier behavior.

Land Rider
Rider Stats
 * Height: 195 cm.
 * Weight: 80 kg.
 * Punching Power: 2.0 tons
 * Kicking Power: 3.2 tons
 * Highest Jump: 12 m.
 * Fastest Speed: 100 m. per 7.0 seconds

Arsenal

 * Mage Driver - Transformation device. (Curiously, Mya's driver is the same style of the Rider Master's)
 * Power Rings - Gives access to Land Rider's spells.
 * Sword Blaster - Kamen Rider Mage's weapon.
 * White Garuda - Land Rider's Mini Beast, possibly the same one used by the Rider Master.