He is known as the bassist for the alternative metal band Life of Agony, his work on his graphic novels Wire Hangers, Crawl to Me and Killogy, as well as his horror-themed adult coloring book series The Beauty of Horror.

In 2006, Robert announced the creation of a punk rock band Spoiler NYC, which he formed with long-time friend, "Junkyard" Silletti and Tommy Clayton.

Best known for their high-energy live shows which regularly feature dedications to their merchandise coordinator, Guy Bannister, Spoiler NYC released two songs in 2009.

In 2016, Robert and the other original members of Life of Agony announced they would be releasing their first new album in over eleven years, "A Place Where There's No More Pain" on Napalm Records.

24 on Billboard's Hard Rock Albums chart, and received critical acclaim from Rolling Stone, Kerrang, Revolver, and several other high-profile music reviewers.

Robert's band announced the release, in October 2019, of its sixth studio album The Sound of Scars on Napalm Records, which acts as "Chapter Two" to their classic debut River Runs Red.

[10] In December 2012, IDW Limited released two limited-run hardcover versions of the comic series in a black and red label options, featuring original artwork by Alan Robert included within each package.

In "Wolf and Cub", the February 9, 2012, episode of the CBS show Person of Interest, several IDW Publishing books and posters are featured on the set, including Alan's Crawl to Me, Wire Hangers and Killogy.

A Crawl to Me poster painted by artist Menton3 was featured in a pivotal scene inside a comic book shop near the end of the episode.

[20] In July 2013, Robert teamed up with IDW again to produce his next comic series, The Shunned One, which focuses on an Angel of Death who goes rogue after being ordered to take several innocent lives.

A six-minute animated teaser featuring the likenesses and voices of celebrities Frank Vincent Marky Ramone, Brea Grant, and Doyle Wolfgang Von Frankenstein, who all appeared as characters in the original comic series, launched on Rolling Stone magazine's website.

The film adaption is being scripted by writer Jack Reher, and being co-produced by Robert's Wasted Talent Entertainment firm along with The Coalition Group.