If you thought Jon Hamm was done playing Don, after his run on "Mad Men" that earned him an Outstanding Lead Actor win at the Emmys earlier this month, think again. While Hamm may be leaving the hit drama series and Don Draper behind, the 44-year-old actor will be playing another ad man named Don in a guest star appearance on an upcoming episode of Nickelodeon's "SpongeBob SquarePants."

According to Entertainment Weekly, Hamm will go underwater in the cartoon's current season, playing an aquatic ad man named Don Grouper. If you haven't already guessed from the not-so-subtle name, the character is a grouper fish and, in a nod to Hamm's "Mad Men" role, an advertising executive named Don. In the episode, SpongeBob (Tom Kenny) and Mr. Krabs (Clancy Brown) will consult Don Grouper when they need some sound business advice. Hopefully, Hamm's Don Grouper will deliver the "SpongeBob SquarePants" version of the Carousel speech

See a sketch of Jon Hamm's "SpongeBob SquarePants" character, released by Nickelodeon, in the tweet below:

Hamm is fresh off a win at the 2015 Emmys for Outstanding Lead Actor in a Drama Series, winning for his work in the final season of AMC's "Mad Men." Hamm had been nominated for the role seven times before but had never taken home the trophy.

"It was a very odd experience, because after I made my hilarious joke of crawling on the stage, I turned around and realized people were clapping for me and I was mortified," Hamm told reporters, including International Business Times' Monica Castillo, in the press room after the win. "It has been so nice, all of it, over the many, many years that we have been here and this feels like the culmination of that good feeling."

Watch Jon Hamm win an Emmy at the 2015 Primetime Emmy Awards below:

No date has been released yet for Hamm's "SpongeBob SquarePants" episode. Season 17 of "SpongeBob" is currently airing Fridays at 7:30 p.m. EDT on Nickelodeon.