Bob Einstein, a comedian, actor and two-time Emmy winner best known for his work on "Curb Your Enthusiasm," has died at 76, his representative confirmed to USA TODAY.

"Sadly, it is true," Einstein's representative Lee Kernis confirmed in an email, saying that Einstein died Wednesday at his home in Indian Wells, Calif.

Einstein is probably best known to fans as Marty Funkhouser, creator and star Larry David's friend, on "Curb Your Enthusiasm."

Einstein is also well known for creating the satirical stuntman character Super Dave Osborne, bringing the character's comedic appeal to various variety shows and late night comedy shows from the 1970s to the present day.

Einstein's younger brother, actor-director Albert Brooks, took to Twitter to commemorate his brother's life.

"R.I.P. My dear brother Bob Einstein," Brooks wrote. "A great brother, father and husband. A brilliantly funny man. You will be missed forever."

Einstein won two Emmy awards during his career, one for "The Smothers Brothers Comedy Hour" and one for "Van Dyke and Company." He was nominated four other times during his lifetime.

The late actor also had comedic writing credits under his belt, including credits as a writer on "The Sonny and Cher Comedy Hour," "Super Dave," "The Smothers Brothers Comedy Hour," "Van Dyke and Company" and "The Hudson Brothers Razzle Dazzle Show."

He also starred as Larry Middleman in the third season of "Arrested Development," had a guest appearance as Hoffler on Season 2 of "Anger Management" and was featured on Jerry Seinfeld’s “Comedians in Cars Getting Coffee” in 2012 and 2017.

Celebrities reacted to Einstein's death on social media, expressing their feelings about the beloved comedian.

"Star Wars" star Mark Hamill responded to Brooks' tweet, writing, "Thank you for a lifetime of laughs, Bob Einstein. #RIPSuperDaveOsborne"

“We lost a friend today. thanks for all of the laughs on Curb Your Enthusiasm,” actress Cheryl Hines wrote on Twitter. “Our love to Bob’s family.... The comedy world will miss you.”

“I knew him forever. (Heart emoji) to his loved ones. His long career is hard to match. His role on #curbyourenthusiasm was excruciatingly brilliant!” comedian Richard Lewis tweeted. “Our cast and crew will be devastated. He was so loved. He told me how much he loved LD and Curb. RIP buddy.”

Actress and comedian Marsha Warfield remembered him as “one of the first comedians I met when I got to L.A.”

"May he rest in peace," Warfield wrote.

Actor David Alan Grier tweeted: "Rest n Peace Bob Einstein. Had the honor of working with you. Loved your wit, charm, n subversive humour. Your spirit will be missed in this world.

“Veep” executive producer David Mandel shared a favorite memory of the late star.

“Very sad. Got to work with him on #Curb. Had heard he was sick. Will never forget him telling @jerryseinfeld​ the dirty joke about the newlyweds,” he tweeted.

Producer John Cohen remembered Einstein as “so (expletive) funny” in a NSFW tweet.