It is not clear who "az-3" is as there does not seem to be any widely known individual or entity with that name. It is possible that it could be a username, code name, or abbreviation for something specific. Without more context, it is difficult to determine the exact identity of "az-3."
From star wars
In the Star Wars universe, AZ-3 is the designation for a medical droid character. Specifically, AZ-3 is an ancient and wise medical droid who appears in the animated TV series "Star Wars: The Bad Batch." AZ-3 assists the clone troopers of Clone Force 99 with medical care and support throughout their missions. The droid is known for its dedication to healing and helping others, despite its somewhat sarcastic and cantankerous personality.
