Kyle Walker is Isabelle's deceased fiancé. He appears in flashback sequences as well as the dream world created by Nexus of Serenity in The Morning Star.
Personality
Kyle was a brave and loyal soldier, dedicated to fighting for the crown and unable to abandon his comrades.
Story
Kyle was a knight, soldier and member of the Aleister Dragonbane Expedition.
During a mission, Kyle fought alongside his commander and friend, Rowen Dragespear, against an evil black dragon. Even though they defeated him, the dragon in a last act of revenge placed a curse on Rowen, one that turned him into the black dragon every time he tried to protect someone. Consumed by the curse, Rowen killed his entire squad, including Kyle.
The Morning Star
Inside the dream world created by Nexus, Isabelle reunites with Kyle and runs away with him. After Kyle is discharged for deserting the royal army, the two are interrupted by Rowen, who comes to convince Isabelle see that nothing is real.
The two fight again, but Kyle's spirit appears asking Isabelle not to tie herself to the past and move on.
Rowen explains to Isabelle the truth about his curse and that he had no intention of killing Kyle. The two choose to return to the real world, but not before Isabelle says goodbye to Kyle.