Gregory Nicotero is an American special effects makeup artist, director, and producer, best known for his work in the horror genre. He gained fame for his contributions to the television series The Walking Dead, where he served as an executive producer and the head of special effects makeup. Nicotero's expertise in creating realistic zombie effects has earned him critical acclaim and several awards. In addition to his work on The Walking Dead, Nicotero has collaborated on various films and television projects, including Dawn of the Dead and Creepshow. He is the co-founder of the special effects company KNB EFX Group, which has worked on numerous high-profile productions, solidifying his reputation in the industry.