noun
person with a bounty on their head
Refers to a wanted person for whom a reward is offered, often in a criminal or fugitive context. The term is a compound of 賞金 (reward money) and 首 (head), evoking the historical practice of bounty hunting.
彼は賞金首として指名手配されている。
He is wanted as a person with a bounty on his head.
その賞金首を捕まえれ
If you capture that wanted person, you can get a large reward.