The much beloved recently departed Robin Williams was a gamer and comics fan.  He played WoW (World of Warcraft), hung out at comic shops, and loved to talk fandoms with friends.  It seems like Blizzard has done something really awesome, and created a NPC named Robin, as a gesture of memorial.

There is an entry on WowHead for the character, and Escapist has a list of possible locations to find him.  WoWInsider has him appearing in Warlords of Draenor.