Its time for the nextBrooklynsuperfan to go from sideline supporter to supporting cast.
Sean Astinwill guest-star on the April 25 installment ofBrooklyn Nine-Nine, EW has learned exclusively.
Have nothing 2 do with the show.

John P. Fleenor/NBC
Im just a fan who deserves better.
Brooklyn Nine-Nineco-creator Dan Goor certainly sounds like a fan of the actor.
Working with Sean Astin has been a dream of mine since I saw first sawRudy, he tells EW.

John P. Fleenor/NBC
Im what you call an Astin-head.
Im so excited to have him on the show.
(you could get a preview of Sergeant Knox in the first-look photos above and below.
Andre Braughers Holt doesnt seem too impressed with the progress of the mission.)
And wed love to venture to figure out ways to put them on our world.
In other words:Mark Hamill, weve got our eye on you.
Brooklynreturns to the schedule this Thursday at 9 p.m.