What manner of men - literally, “Where are the men?” The sense, “what manner of men,” is merely gathered from the tenor of the answer.

Then he said to Zebah and Zalmunna. —They had been kept alive in order to answer the cowardly taunt of the elders of Succoth. Ther…

Then said he unto Zebah and Zalmunna, What manner of men were they whom ye slew at Tabor? And they answered, As thou art, so were they; each on…

Then said he unto Zebah and Zalmunna
Not at Penuel or Succoth, but when he had brought them into the land of Canaan,…

The kings of Midian must be reckoned with. As they confessed themselves guilty of murder, Gideon acted as the avenger of blood, being the next of k…