Osoi

He was the father of Musai and partner of Toroi.

Background
He fought alongside Toroi in their last battle, both dying. He was later revived by Orochimaru in an attempt to revive Toroi.

Personality
Seemingly a very proud ninja, he told his son that he should lie about his father's ability. He wanted Musai to ensure that the Raikage knew of his sacrifice.

Abilities
Osoi displayed no unique combat ability, but did reach the rank of Chunin and fight alongside one of Kumogakure's most famous ninja.