Continuity mistake: The note that Eleanor pulls out in the beginning of the episode does not visually match with the one she picked up at the end of last episode.
Category 55 Emergency Doomsday Crisis - S1-E5
Visible crew/equipment: A crew member and their boom mic are reflected in one of the windows in Eleanor's house as she and Chidi pretend to go to bed. (00:19:30)
What We Owe to Each Other - S1-E6
Visible crew/equipment: You can see a crew member hand Janet a stack of papers behind her back.
...Someone Like Me as a Member - S1-E9
Continuity mistake: In the flashback where Eleanor gets offered a permanent position at the company she's working for she's holding a cup of coffee on the desk in front of her. After she says "I'm good" the shot changes and she has a Rubik's Cube in her hand. The shot changes back and she's holding the coffee cup again. (00:17:10)
...Someone Like Me as a Member - S1-E9
Continuity mistake: When teenaged Eleanor stands on the table to make an announcement, she dumps food on the table. In the next shot the food has moved.
Continuity mistake: When Eleanor tells Chidi she loves him she has dark nail polish on. When she starts to argue with Tahani her nails don't have any polish on. As shots change during their discussion her nails keep changing colour. (00:10:50)
Audio problem: When Janet is talking to Michael about how she loves Jason, there is a shot looking at Michael with Janet to the right. Janet is talking but her lips aren't moving.
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.