Upon hearing of Robin Williams passing, World of Warcraft players petitioned to have him (who was an avid fan of the game) immortalized within the MMO with his own NPC (Non Playable Character). Blizzard, the makers of WoW, listened. The game itself has a history of adding media icons into the game as an NPC, bridging the gap between the real world and the fantasy realm players enjoy so much.
It seems Robin will be no different. Blizzard has tweeted a confirmation, saying we will see him in game.