Which of the following is not a playable race in the MMORPG Guild Wars 2?

Tengu is not a playable race in the MMORPG Guild Wars 2 because, although they are an interesting and highly anticipated race in the game's lore, their unique wings and racial skills posed technical challenges for the developers. As a result, the tengu were ultimately introduced as a non-playable race and limited to being non-playable characters in specific areas of the game.