TV-Series
Description
Boskatsu is a central creature partner to the protagonist Katta Kirifuda in the Duel Masters Versus Revolution Final anime. He is a founding and leading member of Team Hamukatsu, a group of creature spirits that fight alongside Katta. Originating as a simple pet hamster, Boskatsu underwent a dramatic transformation when Katta removed the plaster on his forehead, an event that unlocked his latent potential. A mysterious entity named Katsudon appeared in Boskatsu’s dreams, providing him with a blank card frame and a mission to protect Katta. Following this, Boskatsu left his cage and orchestrated the transformation of his fellow hamster, Hamukatsu, by pushing him onto the blank card, thereby granting him the ability to speak and take on a creature form.

In his natural, animal state, Boskatsu is a hamster who is slightly larger than his companion Hamukatsu. He has brown fur, a distinctive V mark on his forehead, and an X-shaped marking on his belly. In this small form, he is often seen with a smoking pipe and carries building tools strapped to his waist. When he manifests as a creature card, Boskatsu grows significantly larger and sprouts a drill horn on his head, a tail, and a pair of wings. He wears a sleeveless jacket and fingerless knuckles, and the X on his belly becomes more prominent, resembling a scar. As he undergoes further training, Boskatsu gains upgraded forms, such as Bosskatsu Buster, No.2 Man, which features brighter colors and no wings, and later Bosskatsu Knuckle, where he dons a white jacket and wields a large blue mechanical gauntlet.

Personality-wise, Boskatsu is a leaderly figure who takes his self-appointed role as the boss of Team Hamukatsu very seriously. He is older and more experienced than Hamukatsu, possessing a significant amount of knowledge about the Duel Masters card game. He frequently offers Katta advice on both dueling strategies and deck building. He speaks in a unique, dramatic manner reminiscent of traditional Japanese opera, often employing long pauses and lengthy speeches. While his primary mission is to protect Katta, he also has a notable competitive side. He can become uneasy about his position as the superior member of the team, especially when other powerful creatures like Dogiragon join their ranks, and he is driven to prove his worth and become stronger.

Boskatsu’s primary motivation is the protection of Katta Kirifuda, a mission given to him by Katsudon. He pursues this goal with a proactive and ingenious spirit. He acts as a mechanic for Team Hamukatsu, using his talents to produce and build new cards and creatures to aid in difficult battles. A key example of this is when he takes an armor left behind by the creature Dragon Ryu and uses it as building material to create the powerful mechanical dragon Briking, Deluxe. He is also deeply invested in the success and identity of Team Hamukatsu, training both Katta and Hamukatsu and evolving himself to ensure the team remains strong.

Within the story, Boskatsu plays a vital role as both a secret weapon and a strategic backbone for Katta. He makes his debut by slipping into Katta’s deck before a crucial duel, revealing his ability to use the Revolution Change mechanic to swap places with another creature in battle, turning the tide for a victory. He is the inventor and builder of key revolutionary creatures for the team. Beyond dueling, he participates in the daily lives of the main group, joining them at school and interacting with other characters, though he often ends up on the receiving end of accidental violence from his ally Lulu Takigawa. His role expands to being a key component in the team's final strategies, including helping to create the ultimate Curry Bread of the Universe to defeat the final antagonist.

Throughout the series, Boskatsu shows significant development, particularly regarding his sense of identity. Initially, he is highly concerned with being acknowledged as the sole boss of Team Hamukatsu. When the powerful creature Dogiragon evolves into a new form and joins the team, Boskatsu feels his position is threatened. This leads him to undergo self-training to prove his superiority, evolving into his more powerful form, Bosskatsu Buster. After this transformation, he eventually lets go of his rigid obsession with being the boss and accepts Dogiragon as the team's captain, solidifying his own role as a crucial and respected member.

In terms of notable abilities, Boskatsu is a master of the Revolution Change mechanic, which allows him to swap places with another creature during battle, often catching opponents off guard. As Bosskatsu Buster, he gains the Speed Attacker ability, allowing him to attack on the turn he is summoned. His most significant skill, however, is his mechanical genius. He is an inventor capable of constructing new creatures from raw materials and even fusing them with blank card frames to create functioning cards. He can also use his fire abilities in combination with his teammates for powerful joint attacks.