Kamijiro

Kamijiro is a lion's head and legs that are attached to Holdem's body due to his consumption of a lion SMILE.

Appearance
Kamijiro's entire body consists only of a lion's head and two legs growing from Holdem's waist. His head has a circular mane that alternates in color.

Personality
Kamijiro has a mind of his own, allowing him to act independently of Holdem. Much like Holdem, though, he is very violent and quick to anger. However, his rage can sometimes make him act rashly, as shown when he attacked Holdem even though the attack would also damage himself.

Holdem
Kamijiro shares a body with Holdem due to the latter creating him with a SMILE Devil Fruit, and so the two normally act in tandem. Kamijiro usually obeys Holdem's commands during battle and when dealing with enemies. However, the two's similar personalities can cause them to sometimes get annoyed with and attack each other, even though they share the same body.

Abilities and Powers
Though he is limited by only going where Holdem goes, Kamijiro possesses tremendous strength that assists Holdem greatly in battle. His legs appear to be quite powerful, as shown when he swiped Holdem in the groin and caused both of them great pain. His jaw is also extremely strong, as Holdem stated that he could crush and tear apart Tama with ease with it.

Kamijiro also possesses the ability to breath a large stream of fire, which Holdem calls Lion Fire.

Wano Country Arc
Holdem had a young girl named Tama brought to his headquarters, and hit Kamijiro after getting annoyed at the lion staring at him. Kamijiro got angry and retaliated by hitting Holdem in the groin, but this hurt the lion as well since he shared the same body with Holdem.

Later, Holdem's house was destroyed when Monkey D. Luffy sent the yokozuna Urashima flying into it, and Kamijiro held Tama in his mouth as Holdem confronted Luffy. Holdem threatened to have Kamijiro crush Tama in his jaws if Luffy moved, but Luffy moved and hit Kamijiro in the blink of an eye as he freed Tama from his grasp. Luffy then turned around to attack Holdem, who had Kamijiro breathe fire at him. However, Luffy emerged from the flames unharmed and punched Holdem in the face, defeating him and Kamijiro.

Trivia

 * "Kami" means "bite", while "jiro" is a male name suffix used for the second son of a family.