Yuyupoid is Nukude's first Utauloid other than himself, Nukupoid. Technically his second but Nukupoid is the Utauloid representation of Nukude and so are one in the same.

Yuyupoid is sometimes reffered to as Yuyu or Yupo, he is somewhat quiet and very curious about things. He is usually happy, very well mannered, and sometimes oblivious.

He's clumsy and sensitive, he is sometimes found crying for making mistakes. He loves to sing but is sometimes afraid that he sounds too much like Nukupoid/Nukude and afraid that no one would like him.

He is also afraid that others would pick on him because of his ears. Though they are large, loud noises don't bother him at all unless they are sounds that are bothersome to average human ears.

He loves ice pops and shaved ice. He also likes objects that are shaped like diamonds, the four sided kind. His color theme is a sky or icy blue.