Moretti is known by the name of "Moretti the Murdered." He is a member of the Vongola Famiglia with the skill to stop his own heart so that he appears to be dead. He was first introduced as part of a test made by Reborn for Tsuna to see how Tsuna would react if he thought he killed somebody.
Moretti is tall and lean with small eyes and a small nose, also having thin lips. He wears a black beanie and coat, as well as a yellowed collared shirt underneath.
Moretti makes his first appearance faking his death as a thief to help Reborn gauge Tsuna's reaction at killing someone.
When the CEDEF are invading the Vongola headquarters to determine the Ninth's safety, Moretti had been working as a spy in the Vongola HQ for Iemitsu; as such, during the invasion, he snuck up on a Mosca prototype by stopping his heart, thus being invisible to the Mosca's life sensors and shut it down. He then warned the CEDEF that the Gola Mosca which the Varia had received was not a prototype and had no off switch, so that if it rampaged, it would be "unstoppable."
- He has the same voice actor as Ushio Ooyama, a minor character who only appeared in an anime filler.