Blue J features blue hair and a star-shaped mark on the forehead. This design gained increasing prominence throughout the Wrestler Gundan merchandise, especially within later sticker sets linked to Gamura Twist and Ramen Bar snacks. The character's rising visibility in the product line highlights their narrative significance within the collectible universe.

Within the sticker collection lore, Blue J undergoes an evolution into the figure known as "Robin God." This progression utilizes the layered "W seals" and "W+1 seals" gimmicks, where underlying stickers revealed alternate or powered-up character forms. Blue J's transformation into Robin God exemplifies this mechanic, with the layers indicating power variations or distinct states. Sticker backs provided character details and plot points building an overarching narrative, though textual depth lessened in subsequent MARK II P&S releases.

Details regarding Blue J's actions, relationships, or story arcs in anime or other media adaptations are documented exclusively within the context of the Wrestler Gundan collectible sticker sets.