It looks like Nathan Fillion's dreams have come true. After hinting on Twitter that he would love to have a role on hit NBC show Community, the much loved actor (mention his name to a Joss Whedon fan and watch them melt) is set to guest star on upcoming episodes of the hit show.

The actor who is well known for his roles in Firefly and Castle will feature in the fifth series. But it will be a short lived appearance, as Fillion is only going to be on our screens for a week, playing the head custodian of Greendale Community College, Bob Waite.

According to Collider, Fillion's character will certainly ruffle a few feathers: 'When Annie (Alison Brie) and Professor Hickey (Banks) team up to navigate Greendale’s corridors of power, they must contend with Bob Waite (Fillion), the politically savvy head custodian who's not afraid to get his hands dirty but is smart enough to wear rubber gloves'.

Fillion starred in TV comedy show, Two Guys and A Girl before he went onto to star in Joss Whedon's 'Firefly' and 'Buffy The Vampire Slayer'. There is no premiere date set for the fifth series of the show just yet, but we're sure it will mark a welcome return to comedy for the actor.