User blog comment:TheDipDap1234/TDPTRR Official Poster and Don is revealed! SPOILERS!!!/@comment-4393544-20141002014234/@comment-1527105-20141003201403

He said he was voicing an old character. Julie said they had no plans for anybody in the balloons and would try to talk to the writers about that. Sam was in the balloons, meaning the people working on the series have no plans involving him, singling out Harold.