Arin Hanson, also known by his alias EgoRaptor, can be found hiding atop a cloud in the level "Blizzard of Balls". When talking to him, he'll say "Don't be a Grump, take these!" which the Nerd will say "Thanks, EgoRaptor. Now I'm not so Grump!". The dialogue is a reference to the web series Game Grumps which Arin co-hosts.