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Tazaru is a member of the Giglio Nero Famiglia and was once a C-rank Black Spell member of the Millefiore Famiglia's 3rd Squad, serving with Nosaru under captain Gamma until all three defected to join the Vongola. Although he refers to Gamma and Nosaru as Bro, it's unclear if they are actually related.
Tazaru first appeared at an abandoned factory alongside Nosaru while attacking Adult I-Pin, Lambo, Haru Miura and Kyoko Sasagawa. Adult Takeshi Yamamoto, along with Tsunayoshi Sawada and Hayato Gokudera, soon arrived to aid their comrades and while Nosaru engaged Yamamoto in combat, Tazaru chased Tsuna inside as he looked for Kyoko who was soon replaced by her younger self. While fighting Tazaru wounded Tsuna and used his Dark Slicer to attack. However Tsuna froze them both and knocked Tazaru out before losing consciousness himself. After recovering, Tazaru joined Gamma and Nosaru, in the search for the Namimori Vongola Base and killed Takeshi Yamanaka who he mistook for Yamamoto. Later, after Gamma's defeat, Nosaru was nearly beaten up while trying to calm him, but Tazaru took the hit instead and implied that Gamma was scared of The Phantom Knight
As the Vongola were being chased by the Six Funeral Wreaths, Nosaru and Tazaru attacked Torikabuto after Gamma took Yuni back, however, they were both easily defeated. The next day they joined Ryohei Sasagawa, Lambo and Basil to ambush Kikyo. However his first attack with Nosaru failed, leaving Kikyo free to release an army of Velociraptor di Nuvola and Tazaru was wounded while protecting Lambo. Later he watched as Gamma and Yuni sacrificed themselves to revive the Arcobaleno.
Tazaru is present as the future Yuni walks out of the forest and catches the Sky Pacifier, which was expelling Flames. He, along with Gamma and Nosaru, are Yuni's representatives from the Giglio Nero, while Byakuran and the Six Funeral Wreaths are Yuni's other representatives. He is later eliminated on the first day of the Representative Battle of the Rainbow by Team Verde.
Weapons and Abilities
- Dark Scythe: A scythe covered in Storm Flames that is able to shoot projectiles covered in Storm Flames that explode upon impact.
- Dark Slicer: Weapon that chases after opponent's Flame, and when Flames are fired at it, it reacts with it and increases its speed until its speed is 1.5 times than that of the target.
- Spikes: Spikes that protrude from Tazaru's back.