Years before her comic role in the pretty Mrs. Meisel, Rachel Brosnahan was told she was "not funny."

"It's just a lot of people who are professionals and say, 'Maybe you want to go the other way. Maybe you can think of something here,' says Rachel Brosnahan.

For many, Rachel Brosnahan, who starred in The Marvelous Mrs. Maisel, seems natural, but not everyone feels that way about her, according to the actress.

During Thursday's FYC show on Prime Video, Brosnahan appeared in the cast and revealed how he "spent the early years of my career telling him I wasn't having fun."

"That's not an insult. It's just a lot of professionals who say, 'You might want to go the other way. Maybe you can think of something here," he said at the event that took place at Steiner Studios in Brooklyn, New York. "I think it's been a challenging workout and amazing over the last few years."

Brosnahan, 31, said that he was "forever in debt" to the show's executive producers, Amy Sherman-Paladino and Daniel Paladino, for saying yes and taking the opportunity to have someone like him.

"The day I realized I was going to be the midges, [I] lost the role that morning because I wasn't having enough fun," he recalls. "They want someone more fun." In another part of the panel, presenter Danny Strong recalls his conversation with Amy and Dan about the challenging process of choosing the character of Brosnahan, protagonist Miriam "Midge" Meisel.

"I had dinner with them early in the casting process. And Amy said, "Yeah, I can't... I couldn't find a clue. And if I didn't find one, I wouldn't be on the show because I needed someone great, or it would just be a waste of my time,' recalls Strong, 47 years old. "Then we had dinner, and I don't know, a month later, three weeks later. And he said, 'I found it. We're all fine." So if he doesn't find [Rachel], he may never have the show." Amy, 56, later revealed what Brosnahan was urging about the other contenders during auditions: "He's the only one who can get into the mic. Everyone stays away from the mic."

"He's the only one who knows that if you're going to be a stand-up comedian, you'll lean on that evil mic," continued creator Gilmore Girls. "And if you don't have the guts to do it, you have to get off the stage."