Waver can be called a "spoiled brat" who is the very embodiment of a "narcissist that does not doubt he's a genius." He displays traits of cowardliness, being short-tempered, and constant complaints without action. He has an inferiority complex about his abilities as a magus and Master, and he constantly doubts himself at every turn. He forms a bond with Rider over time that begins to change him, with Rider bolstering his confidence and recognizing his traits. He praises Waver for riding into the front lines of battle with him, he comforts Waver upon seeing Caster's victims, and remarks in his abilities as an unconventional but exceptionally talented magus, though Waver quickly refutes him.