Greg Nicotero is an American special effects makeup artist, director, and producer, best known for his work on the television series The Walking Dead. He co-founded the special effects company KNB EFX Group, which has contributed to numerous films and television shows, earning acclaim for its innovative makeup and creature effects. Nicotero has been involved in the horror genre for decades, working on projects like Evil Dead II and The Thing. His expertise in practical effects has made him a prominent figure in the industry, and he has received several awards for his contributions to film and television.