Will Stephen Colbert Kill Character Colbert? Last guest is 'Grimmy' the Grim Reaper By John Johnson, Newser Staff Posted Dec 12, 2014 10:59 AM CST 13 comments Comments In this Oct. 13, 2013, file photo, Stephen Colbert delivers the keynote address during the Alfred E. Smith Memorial Foundation Dinner in New York. (AP Photo/Jason DeCrow, File) (Newser) – Stephen Colbert signs off from Comedy Central next week, and the guest list is raising some eyebrows because of the one who appears last: It will be Grimmy, as in the Grim Reaper, who is described affectionately as Colbert's "colleague and lifelong friend," reports USA Today. So is the real Colbert killing off the fictional Colbert? It kind of looks that way, observes Gawker. It notes that Colbert joked in October about "massive foreshadowing" and panned over to Grimmy sliding a finger across his throat. The last show is Thursday, and Colbert will take over David Letterman's show in September as the real Colbert.