Jay Leno will guest star in Phineas and Ferb Save Summer on June 9 on Disney XD.

Phineas and Ferb Save Summer will be a one-hour special event and Leno will voice the character of Major Monogram’s boss, Colonel Contraction of the O.W.C.A. (Organization Without a Cool Acronym). This special episode has Phineas, Ferb and the entire gang hosting a global summer concert but Doofenshmirtz’s latest “inator” invention puts summer in jeopardy.

There was a sneak peek of the highly -anticipated Phineas and Ferb: Star Wars one-hour special during the Star Wars weekend at Walt Disney World Resort. The special will premiere in July and will put the show characters in the world of Star Wars. Phineas and Ferb are Luke Skywalker’s neighbors, Doof meets Darth and Ferb goes to the dark side and becomes a Sith.

Leno is not the only big name to guest star in new episodes also guest starring are Jon Stewart, Elizabeth Banks and Simon Pegg.

Disney Television Animation produced Phineas and Ferb Save Summer. WATCH Disney XD users will have access to the special beginning May 23 online, on smart phones and tablets as well as Disney XD On Demand.