Tartgalia is the 11th fatui harbinger. His code name is Childe and his assigned name by his parents is Ajax, though he rarely lets individuals use that name unless they are close to him. Childe's work personality is very work orientated and his first priority is always the mission. He is cold and calculated and can find himself growing short of patience or impatient at times. He likes when things are done his way and can tend to be a little bossy. He can also tend to be mean.