The iconic sitcom Friends has been synonymous with unforgettable guest star appearances throughout its ten-season run. Yet, one particular guest star’s potential was never realized fully, leaving fans wondering what could have been—especially after witnessing his comedic prowess in a later show. Even two decades after airing its final episode, Friends continues to captivate audiences, securing its place in television history thanks to its unique blend of humor and heartfelt storytelling. The show’s impressive run naturally attracted a variety of guest stars, with some making fleeting appearances while others had more recurring roles.
Central to the series are the lives of Monica, Chandler, Joey, Phoebe, Ross, and Rachel, which allowed numerous guest characters to interact with them, ranging from delightful allies to romantic interests. Notable appearances include celebrities such as Jean-Claude Van Damme, Julia Roberts, Bruce Willis, and Reese Witherspoon, each contributing to memorable moments on-screen. However, one specific guest star from Friends’ ninth season stands out for not having his character reach its full narrative potential.
The Missed Opportunity of Dermot Mulroney in Season 9
Gavin’s Limited Engagement in Season 9

In Season 9, Friends explores the complexities of Ross and Rachel’s co-parenting while Rachel develops feelings for Joey, and Ross encounters Charlie. During this period, Rachel meets Gavin (played by Dermot Mulroney) at her workplace. Gavin temporarily takes over Rachel’s role while she is on maternity leave, prompting her to return early upon realizing how well he has impressed their boss and colleagues.
Initially, Rachel and Gavin are caught in a competitive dynamic. However, Rachel comes to appreciate his support when he helps care for Emma, allowing her to focus on a crucial work presentation. The relationship takes a romantic turn during Rachel’s birthday party, culminating in a kiss on the balcony—an event witnessed by Ross. Ultimately, upon understanding the intricacies of Ross and Rachel’s relationship, Gavin and Rachel mutually decide to part ways, and this marks his departure from the series.
Regretting Gavin: A Better Role in New Girl
New Girl and the Redemption of Dermot Mulroney

Fast forward nearly a decade, and Dermot Mulroney returned to television with a recurring role in New Girl. He portrayed Russell Schiller, a wealthy benefactor involved in the life of Jess (Zooey Deschanel), enhancing the storyline significantly. Unlike his brief stint on Friends, Russell was given substantial character development, showcasing Mulroney’s comedic talent and romantic charm. Throughout the show, Russell and Jess navigate the complexities of their relationship, culminating in a heartfelt conclusion that further engaged audiences.
The character of Russell in New Girl illustrates what Gavin could have evolved into had there been more screen time and narrative development on Friends. While it’s disappointing to see Mulroney’s talents underutilized previously, New Girl provided him with a platform that allowed for richer storytelling and character growth, offering fans a chance to enjoy his engaging performance fully.