Just like pirates, Kaeya covers one of his eyes with an eyepatch. In fact, he said he inherited it from his grandfather (who he says was a pirate). On top of that, Kaeya has dark-tannish skin.
An accomplished swordsman and a strategic thinker in the Knights of Favonius, rumored to hail from beyond Mondstadt. Kaeya is an outwardly confident and charming individual. Tartaglia, is also known by his codename "Childe" He is the Eleventh of the Eleven Fatui Harbingers. Childe and Kaeya are flirty.