Which band member from "Avenged Sevenfold" passed away in 2009 at the age of 28?

Jimmy “The Rev” Sullivan of Avenged Sevenfold died in 2009 at the age of 28.

Born James Owen Sullivan, he was the band’s drummer and one of its most prominent songwriters. He helped shape Avenged Sevenfold’s energetic sound with highly technical playing, rapid changes, and a style that drew from heavy metal, punk, and hard rock. His stage name, “The Rev,” came from “The Reverend Tholomew Plague.”

Sullivan was found unresponsive at his home in Huntington Beach, California, on December 28, 2009. He was pronounced dead at 28. Toxicology later identified an accidental overdose involving alcohol and several prescription drugs, with an enlarged heart also noted as a significant condition.

Avenged Sevenfold’s fifth studio album, Nightmare, was dedicated to him and released in 2010. The band also honored him through songs including “So Far Away,” written by his close friend and bandmate Synyster Gates. The name is sometimes shortened to “The Rev,” but the stored answer identifies the correct person.