Ferrell's agents got in touch with the sitcom's producers, who were thrilled with the offer and wanted the actor to take on a whole character rather than just a cameo. The Elf star's appearance on the show was a welcomed solution to softening the blow of Carell's exit.

Why was Will Ferrell bad on The Office?

It's simply because his character wasn't supposed to appear for more than an episode. When the writers first created Will Ferrell's character Deangelo, he was supposed to show up for one episode as a truly bad boss in order to show how great of a boss Michael was.

What was the point of Deangelo in The Office?

Deangelo was hired to be the Regional Manager of the Dunder Mifflin Scranton Branch to replace long-time manager Michael Scott. In "Michael's Last Dundies", Deangelo and Michael hosted the Dundies at Louie Volpes, and Deangelo later sang Michael's Goodbye Song with the rest of the branch.