Massively multiplayer online games (MMOGs) are the source of the most varied and sophisticated avatars. Customization levels differ between games; For example, in "EVE Online", players construct a wholly customized portrait, using a software that allows for several changes to facial structure as well as preset hairstyles, skin tones, etc. However, these portraits appear only in in-game chats and static information view of other players. Usually, all players appear in gigantic spacecraft that give no view of their pilot, unlike in most other RPGs. Alternatively, "City of Heroes" offers one of the most detailed and comprehensive in-game avatar creation processes, allowing players to construct anything from traditional superheroes to aliens, medieval knights, monsters, robots, and many more. Robbie Cooper's 2007 book "Alter Ego, Avatars and their creators" pairs photographs of players of a variety of MMO's with images of their in-game avatars and profiles; recording the player's motivations and intentions in designing and using their avatars. The survey reveals wide variation in the ways in which players of MMO's use avatars. Felicia Day, creator and star of "The Guild" web series, created a song called "(Do You Wanna Date My) Avatar" which satirizes avatars and virtual dating.