Every multi-billion dollar film franchise has to start somewhere, and for Marvel Studios, it was 2008's original "Iron Man" film. On a new edition of El Rey Network's "The Director's Chair" series of specials airing this Sunday, Robert Rodriguez -- the founder of El Rey along with the filmmaker behind "From Dusk till Dawn," "Spy Kids," "Sin City" and more -- talks to "Iron Man" director Jon Favreau about the relatively humble beginnings of the Marvel Cinematic Universe. CBR has the first look at a clip from the episode.

"They knew if they made it for a certain amount of money, it would make money," Favreau said in the clip. "They had seen me -- it's like 'Moneyball' -- as maybe an undervalued commodity or asset. That I could handle the effects, I could handle the story, I could handle the humor. They came to me and they got a good deal on me, as they did with Robert [Downey Jr.]."

RELATED: Spider-Man: Homecoming Adds Jon Favreau as Happy Hogan

Of course, Favreau's association with Marvel Studios didn't end there -- he also directed 2010's "Iron Man 2," executive produced both "Avengers" movies and appeared on-screen as Happy Hogan in all three "Iron Man" films. He's reported to reprise his role as Happy in 2017's "Spider-Man: Homecoming," also featuring Downey as Iron Man.

Sunday's episode of "The Director's Chair" will also feature Rodriguez interviewing Frank Darabont about his "The Shawshank Redemption," "The Green Mile," "The Walking Dead" and "Mob City." Favreau and Darabont's two-hour installment of "The Director's Chair" debuts 8 p.m. Sunday, Sept. 25 on El Rey.