According to Entertainment Weekly, Stephen Colbert will appear on a Halloween-themed episode of The Office later this year. Colbert will play Broccoli Rob, a former member of Andy’s (Ed Helms) a cappella group, Here Comes Treble. However, Broccoli gains the ire of Andy by rekindling their old rivalry.

Colbert worked with both Helms and Office alum Steve Carell on The Daily Show on Comedy Central, so it’s only natural for him to show up for the final season of the series. The episode will air on October 25.

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[via EW]