Lucky

Lucky is a nickname that Harry Dresden gives to a young Warden of the White Council. He is of Asian descent, and is on Ancient Mai's personal staff. He first appears in Summer Knight.

Summer Knight
In Summer Knight, he almost froze to death trying to get word to Queen Mab.

Turn Coat
In Turn Coat, Harry Dresden remembers him from the previous incident, while waiting to be allowed to talk to wizard Listens to Wind. Lucky has broken his ankle, and has to stay behind rather than go after Donald Morgan like the others, incident which earns him the nickname of "Lucky".