Samuel Lazcano is a Mexican actor and director of dubbing, recognized for his work in the Latin American Spanish voice-over industry for anime, films, and television series. His full name is Jhonatan Samuel Lazcano Hernández, and he is also known by the pseudonym Koroshy. He developed his craft through various acting workshops with established figures in Mexican dubbing, including Humberto Vélez, Claudia Motta, and Octavio Rojas.

Lazcano has built a substantial career in anime dubbing, providing voices for a wide range of characters. He is known for his role as Shin Wolford, the reincarnated protagonist in the fantasy series Wise Man's Grandchild. He also voiced the technologically gifted criminal Hacker in the cyberpunk action series Akudama Drive. Another notable performance is as Rody Soul, a key character in the feature film My Hero Academia THE MOVIE: World Heroes' Mission. His other prominent anime roles include Purios in Don't Call Us A JUNK GAME, Aoshi Shinomori in the 2024 adaptation of Rurouni Kenshin, and Itsuhito Sakaki in Uzaki-chan Wants to Hang Out!. He has also contributed to major franchises such as One Piece, Attack on Titan, Blue Lock, and Kaiju No. 8.

Beyond his work in anime, Lazcano's voice can be heard in numerous live-action series and films. He has provided voices for characters in Korean dramas, including Woo, una abogada extraordinaria, and for series such as Daredevil: Born Again and Alien: Earth. His film dubbing work includes roles in Sonic 3: La película, Dune: Part Two, and various Marvel Cinematic Universe films like Captain America: Brave New World. He has also lent his voice to animated projects like The Amazing Digital Circus and video games such as Poppy Playtime.

Lazcano frequently collaborates with specific dubbing studios and directors. Much of his work has been recorded at The Kitchen México in Cuernavaca and The Kitchen in Miami, as well as BDG Studios in Mexico City. He has worked under the direction of Rómulo Bernal on several projects, including Akudama Drive and the My Hero Academia film World Heroes' Mission. In addition to his acting roles, Lazcano has also taken on responsibilities as a dubbing director, contributing to the adaptation and quality control of various projects.