The Yettins were created by Snapdragon for C3 and DS. They occupy ettin breed slot N, and can be downloaded from the Wyvern's Lodge. The Yettins are based off the yeti, a cryptid hominid that is said to inhabit the Himalayan mountain range in Asia. See also yeren.
Yettins are sexually dimorphic, with males posessing large horns, and are also cold resistant, with an improved immune system. Yettins can't tolerate high temperatures, though, so shouldn't be kept in the Desert Terrarium like regular ettins.