Gianni Quillico is an Italian voice actor and theater actor, born in Milan on April 9, 1947. He is primarily active in dubbing studios in Milan, where he has lent his voice to numerous characters in animation, television, and video games. Quillico is widely recognized for being the Italian voice of Spider-Man in the first two animated series dedicated to the character.

In the realm of anime and animated series, Quillico has an extensive portfolio. He voiced the character Conehead in the series Fire Force. He is also the voice of Geoffrey Connor in the Netflix series Hero Mask. He provided the voice for Giobatta in the series Calimero. In the fantasy franchise Legend of Crystania, he voiced the character Muha in both The Motion Picture and the sequel series The Chaos Ring. His work also includes the role of Lord Feff in Super Dimensional Fortress Macross II: The Movie.

Beyond these roles, Quillico's career features a wide variety of other voice performances. He is the Italian voice of Greed in Fullmetal Alchemist, Caesar Clown in One Piece, and has voiced characters in Dragon Ball Super, Bastard!!, and Baki. His work is not limited to Japanese animation; he has also voiced characters in series such as Ugly Americans and La leggenda di Vox Machina.

In addition to his work in animation, Quillico is an extraordinarily prolific voice actor in the video game industry. He has voiced characters in many major international franchises. Some of his most notable video game roles include Lord Voldemort, Argus Filch, and Arthur Weasley in various Harry Potter games, Mr. Freeze in the Batman: Arkham series, N. Gin in multiple Crash Bandicoot games, the Prophet of Truth in Halo 2, Icarus in God of War II, Gehrman in Bloodborne, and Shen the Jewelcrafter in Diablo III.