The phrase "a regular role in" is correct and usable in written English.
It can be used to describe someone's consistent position or function within a particular context, such as a job, organization, or activity.
Example: "She has taken on a regular role in the community theater, participating in various productions throughout the year."
Alternatives: "a consistent position in" or "a steady function within".
Cornell is one of the few colleges where faculty play a regular role in admissions.
Occasionally, he offered sacrifice but he didn't play a regular role in the cult.
While portfolio steering committees play a regular role in project portfolio governance, their role is still unclear.
He does not catch for Andy Pettitte or Mike Mussina but will seek a regular role in free agency this winter.
He had a regular role in the soap opera "As the World Turns," had recurring roles in all three "Law & Order" series and performed in dinner theater companies.
The central defender's absence will hand the much-maligned Dejan Lovren the opportunity to claim a regular role in Klopp's team.
He also had a regular role as Jim Powell in the ITV drama serial We Are Seven (1989), set in a sleepy Welsh village rocked by the scandal of half a dozen illegitimate births, and he provided voices for the animated children's television programmes SuperTed and Meees.
Chegwin appeared on TV as a child in episodes of The Liver Birds and The Adventures of Black Beauty (both 1972), as well as the 1973 pilot of Open All Hours, and had a regular role as Raymond Clarkson in the 1975 sitcom The Wackers.
By the late 50's, Mr. Montgomery was also appearing in many television series -- usually westerns -- and even took a regular role for two years in a series called "Cimarron City".
"The industry thinks we're foreign," said musician and veteran actor Rubén Blades, who after many years in the entertainment business has a coveted regular role in the AMC series "Fear the Walking Dead". "We are culturally excluded". And yet, according to several studies, no group buys more movie tickets when compared with their proportion of the U.S. population than Latinos.
In the early '60s he had a regular role on the comedy "Pete and Gladys," and in the late '60s he had a recurring part on the detective drama "Mannix".
