Taken from http://www.unknownhinson.com/new-bio.html
The UNtold Story of Unknown 
Looking somewhat like Dracula's nasty little brother who spent some hard years drinking and working as a carnival barker for a second-rate freak show, Unknown Hinson translates that vibe to his style of country and western-tinged psychobilly. Hailing from Charlotte, North Carolina, this red-necked crooner gained regional popularity with a self-produced television show in 1992 and soon was touring nationwide, wowing audiences with his outrageous and campy, white-trash persona and freewheeling, sleazy tone. Hinson’s most recent CD release, “Target Practice”, melds weepy twang and searing guitar riffs and lyrics that speak of love-gone-bad and the dark side of the honky-tonk lifestyle. Raucous, theatrical and over-the-top, Unknown Hinson isn’t just for the trailer park set anymore!
He's toured with Hank3 and Rev. Horton Heat.
Billy Bob Thornton names Unknown as one of his favorite songwriters and a genius picker. Matt Groening (the Simpsons) labels Unknown as a guitar maniac (and funny as hell to boot!) Hank3 has Unknown's face tatooed on his bicep! Marty Stuart introduced him as his illegitimate brother at the Ryman in Nashville, and is placing Unknown on the front cover of his upcoming book of personal photographs. Tom Petty came backstage at a Hollywood event to ask Unknown how he gets his "sound". The Rolling Stones invited him to participate in the soundcheck session for their latest show in Charlotte, NC.
Unknown is also gaining notoriety (and fans) as the voice of lead character "Early Cuyler" in the popular new show from Cartoon Network "The Squidbillies". The first season was so well-received that an immediate green light was given to two more seasons.
What do ventriloquism, hoola hoop contests, target practice, monster sideburns, and hellacious guitar solos have in common? Book Unknown Hinson and find out!
Unknown Hinson responded to Dolly Parton's support for the Black Lives Matter movement and was subsequently fired. He was replaced by Tracy Morgan for the last season. He is best known for portraying Early Cuyler and for his unique brand of country music in the show for fifteen years.
On August 16, 2020, Unknown Hinson was fired from the series by Adult Swim for his controversial and inflammatory comments towards the Black Lives Matter movement and country singer Dolly Parton. On November 1, 2021, it was revealed that Tracy Morgan will be recasting Early Cuyler as in the show's upcoming thirteenth and final season.
- Unknown Hinson's likeness is seen in some episodes, such as a Baby Vampire Squid from "Butt Trouble".
- An animated appearance of Early's original voice actor made cameos in the episodes "Survival of the Dumbest", "Armageddon It On!", and "Young, Dumb and Full of Gums".
- The Super Computers seen in "Giant Foam Dickhat Trouble", and "Webnecks", make a reference to him by having the "Hinson" part on the computer.