Mayday Walker, who is also known in the original Japanese version as Tobio Habara, is a minor character appearing in the anime Yu-Gi-Oh! Zexal II. He is a professional Duelist and the husband of Brooke Walker, a fellow duelist. His background is primarily defined by his marriage and his career as a pro. He appears in a single episode during the series, taking part in the Heartland Academy Cultural Festival, where he participates in a tag duel alongside his wife. Personality-wise, Mayday is portrayed as supportive and caring toward Brooke, motivated by a desire to stand with her and help her return to dueling. However, during the festival, he is briefly brainwashed by the antagonist Vector, which places him in opposition to the main characters. This forced antagonism leads to a tag duel against Yuma Tsukumo and Anna Kaboom, where Mayday and his wife are eventually defeated and freed from the mind control. His character development is limited, but his role highlights the recurring theme of characters being manipulated by the Barians and later restored. In terms of abilities, Mayday pilots a WIND-based Blimp Deck, which focuses on mutual support strategies. His key cards include Indestructible Airship Hindenkraft and Skypalace Gangaridai, reflecting a style built around large airborne monsters and cooperative tactics, suited for tag duels. His most significant relationship is with his wife Brooke Walker, whom he supports both professionally and personally. Their partnership in the tag duel underscores their bond, though it is briefly corrupted by Vector’s influence. Overall, Mayday Walker serves as a one-episode supporting character who provides a glimpse into the personal lives of professional duelists and the impact of the Barian threat on ordinary people.