Mercy Walker

Mercy Walker is the leading female protagonist on the present side of Kamen Rider: Vampire King. She is one of the users for the Cross System.

Personality
As a Fangire Hunter, Mercy makes it her personal duty to finish her grandmother, Lillian Walker's unfinished affairs, such as the Rook. She meets Scott & develops a liking towards him after helping him with his allergy issue, unaware that he is actually Vampire King himself. She is also not afraid to tell him off whenever he acts strange. While William School has expressed his interest in her, Mercy cannot stand him & was reluctant to notify him of Vampire King's reappearance. However her feelings for him change throughout the series, eventually marrying him. She seems to share her mother's cynophobia.

Over time, she starts to see Vampire King in a different light as he continues to fight the Fangire, rescuing her on more than one occasion in the process. When Edmund Boyd orders the elimination of Vampire King, together with School she tries to assassinate Vampire King but cannot do it.

Fangire Slayer
Mercy's main weapon is a rather small pistol that shoots slugs at high velocities, with an attachment which shoots out a chain that resembles her mother's Fangire Slayer.

Cross
Mercy is one of the four present users of the Cross Systems. She along with Dáire Lister are the only users to not use the Rising Cross function.