In the second season, the reading of the credits was performed by one or more cast members in a comedic fashion, based on a theme announced by Carey that often derived from a successful joke earlier in the show. Another performer who made frequent, recurring appearances was Wayne Brady, who appeared in the majority of episodes of the original format.
All three regulars appeared on the British series; Stiles and Mochrie were both regulars (first appearing in the second and third series' respectively, and both appearing in every episode from series 8 onwards), with Brady a frequent guest in the final series which moved production from London to Hollywood.
Stiles is the most prolific performer in the history of Whose Line? The show consists of a panel of four performers who create characters, scenes, and songs on the spot, in the style of short-form improvisation games.
No one ever seems to stay with Gina very long in recent years.
I think John Stamos was the guy who stayed with her the longest and that was just a few months. Anyway, she now has some old, rich German guy she wants everyone to know is her boyfriend.
From the second season onward, other musicians joined Hall – Linda Taylor made frequent appearances playing guitar and occasionally keyboards, while Cece Worrall-Rubin, Anne King, Candy Girard, and Anna Wanselius appeared alongside Hall (and sometimes also Taylor) on occasion.