A mute Kittybot who loves winter and nature. Though he cannot speak, he knows and understands sign language.

Yuki was produced without a voicebox. He was considered a defect and was sold at a much cheaper price than average Kittybots to two dads in Japan. Even though Yuki could not speak, they loved him like he was their own child, and they cared for him. They observed how much he enjoyed being outside in the winter time, so they named him Yuki Tenshi, or "snow angel" in Japanese. Yuki had formed a very close bond with his dads and they stayed together for a long time, before Yuki's dads sadly passed away from severe sickness. Filled with sorrow, Yuki moved on to living on his own. He is now usually seen standing underneath sakura trees or in public parks, quietly hanging around. Some children get curious and interact with him, and he's always looking for more Kittybots to spend some time with.