Childe, the youngest Fatui Harbinger and renowned for his extreme aggression, has swiftly established himself as an individual not to be trifled with, despite his recent induction into the Fatui Harbingers. Although commonly referred to as Childe, his birth name is Ajax, a name familiar to those who encounter him in more informal surroundings.

Although he possesses formidable skills as an individual capable of taking lives, he demonstrates a tender and affectionate nature.