Kukochihiko (狗古智卑狗) as described in the Wajinden was an official of the Kununokuni and a described as the real power behind the government there.
The original text of Wajinden reads.
其南有狗奴國 男子爲王 其官有狗古智卑狗 不属女王Kukochihiko is a character in Fate/Grand Order.
In it he is depicted as a villain who overthrew Himikoko and conquered Kununokuni, and attempted to conquer Yamatai.