'The Office': Stephen Colbert to guest in Halloween episode as.... -- EXCLUSIVE | EW.com

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'The Office': Stephen Colbert to guest in Halloween episode as.... -- EXCLUSIVE

Stephen Colbert

(Taylor Hill/WireImage)

The host of The Colbert Report is reporting for comedic duty on The Office! Stephen Colbert will guest-star this season as Broccoli Rob, a former member of Here Comes Treble, Andy’s a cappella group, EW has learned. In the Halloween-themed episode, Andy (Ed Helms) discovers that the smarmy, competitive Broccoli Rob is singing a different tune about the history of the group and stirring up drama, which only intensifies the rivalry between these two frenemies.

Colbert – who worked with Helms and former Office star Steve Carell at The Daily Show – will pop up on the Oct. 25 episode. The ninth and final season of The Office begins tonight on NBC at 9 p.m.

(Twitter: @dansnierson)

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