Alexander serves as Salome's loyal henchman, supporting this recurring antagonist in her quests against the Twin Angels and her pursuit of powerful artifacts like the Seven Amulets. He demonstrates unwavering devotion to Salome, consistently aiding her schemes despite their frequent failures. His characterization includes a notable masochistic inclination, appearing to derive satisfaction from enduring unpleasant or humiliating situations in her service. While Salome does not overtly abuse him, she accepts his dedication without reciprocating his apparent romantic interest.

He actively participates in Salome's operations, primarily assisting her in fielding specialized giant robots during confrontations with the Twin Angels. These robots possess diverse capabilities, including the power to temporarily transform the protagonists into cat-like forms. Following defeats, Salome typically escapes capture, enabling both her and Alexander to return in subsequent conflicts.

Alexander exhibits no substantive character evolution or expanded narrative role beyond this dynamic across the franchise's television series, original video animations, or other official media. His consistent portrayal remains that of Salome's devoted subordinate, characterized by his masochistic traits.