Ms. K. has a blog post about Durable Characters in commercials, and she cites Flo from Progressive Insurance and Mayhem from State Farm who have been in ads for a decade (although Mayhem had a hiatus if I recall, and I should, as I consider Mayhem to be one of my professional heroes).
I see her Flo and raise her the Sonic Guys who have been doing commercials for Sonic since 2002 almost continuously and Jack in the Box, who has been in Jack in the Box commercials since the middle 1990s through, what, 2017 (according to the Jack in the Box Fandom wiki)?
1994:
I have to wonder how those actors and comedians feel to know that their most famous work comes from thirty second spots over the course of decades. Hopefully happy for the steady work.
