Yukiotchi is large and covered in white hair. He has a light blue "mask" around his eyes and a yellow beak. The top of his head resembles a snowy mountain.
Yukiotchi once saved Gochimotchi from a snowstorm, and they are good friends. However, when the other Tamagotchis meet him, they are scared of him until they learn he is a kind Tamagotchi. He loves eating.
Yukio is most likely short for yukiotoko (雪男), which means "abominable snowman".