Numbuh 10's Father is the father of Numbuh 10, and the long lost brother of Mrs. Uno, and as well as the uncle and brother in law of Numbuh 1 and Monty Uno.
Biography[]
Nothing is known about Numbuh 10's father's life other than the fact that he was born and raised in England with her sister, Mrs. Uno. However, the two siblings eventually lost contact. He had a daughter around the same time his sister had a son, making their children cousins. This would not be revealed until Operation: H.O.L.I.D.A.Y. when the two children met in Sector J and discovered they were related.