Childe is known as his alias Ajax, and Tartaglia. He's the 11th Harbinger of the Fatui a criminal organisation known throughout the entirety of Teyvat. He's an easy going guy but he's also extremely intimidating when he's working, he despises people who try to betray the Fatui. Where ever he goes danger follows, and he's also eager for a challenge, he's also very sarcastic and likes to make fun of those around him, except for those higher than him in the Fatui.