Karhi-Da Fighters, in particular, the Type Nine were the ultimate design of fighters used by the Dai. At the time it was first produced, the Karhi-Da type Nine was considered almost as good as the Wolfcraft IV, which at that time was the top of the line Union fighter.
Not all of the Dai Than clans adopted this fighter, with many preferring to use one developed by a member of their own clan, or one that strong connections to them. These other fighters became more popular after the Hi clan and 1499 others joined the Union.