Trivia: The cast were sworn to secrecy to not reveal the big twist at the end of season one. Reportedly, all the cast members were really good at keeping the secret... except Ted Danson, who couldn't help but give away the twist anytime he tried to explain the show to someone.
Trivia: The first credited acting role of Jameela Jamil, who was previously a TV and radio host.
Trivia: Whenever the main characters are eating frozen yogurt, it's actually mashed potatoes, since real frozen yogurt would melt too quickly to film properly. Additionally, whenever Eleanor is eating shrimp, it's actually completely artificial since actress Kristen Bell is a vegetarian and didn't want to eat real shrimp. She referred to the artificial shrimp as painted "rubber nuggets."
Answer: No, he is fictional. The joke is that, despite being handsome and charming, Larry Hemsworth is so overshadowed by his brothers that nobody else has heard of him and he feels like a failure.