Boss reprises his role as a supporting character in the *Mazinkaiser* OVA, maintaining continuity with earlier *Mazinger* iterations. His design adheres to the original manga: a stocky build with disheveled black hair, black eyes, and a school uniform accentuated by a waist sash. Brash and boastful by nature, he tempers his showmanship with unwavering loyalty to the Photon Power Lab team, though his lecherous tendencies surface around women like Sayaka Yumi, Lori, and Loru.

Leading his gang—Mucha and Nuke—Boss injects humor through slapstick antics but pivots to combat readiness when piloting the ramshackle Boss Borot. Constructed from scrap, the mecha’s fragility forces Boss to rely on cunning tactics, leveraging stealth and his own bulk to offset its shortcomings. Though outclassed by elite pilots like Koji Kabuto, his resourcefulness aids in thwarting Mechanical Beasts and other threats.

Boss plays pivotal roles in key missions: rescuing Sayaka after the Aphrodite A’s destruction and aiding Koji in restoring Mazinkaiser’s controls during the showdown with Hell King Gordon. His comedic mishaps, such as accidentally targeting Ashura’s daughters or creating chaotic diversions, contrast with daring acts like infiltrating the submarine Salude or disrupting Iron Mask forces during hostage crises.

Evolving from a schoolyard bully to a dependable ally across the *Mazinger* timeline, Boss shares a lasting friendship with Sayaka and harbors unrequited feelings for Jun Hono, sparking rivalry with Tetsuya Tsurugi in *Great Mazinger*. The Boss Borot, despite its ineptitude, remains a battlefield staple, its interchangeable headpieces reflecting Boss’s fluctuating emotions. His narrative threads comedy through occasional heroism, preserving core traits while sporadically rising to meet dire challenges.