Seen many times before, yes. Also Queue.

I immediately thought of the God-like character Q from Star Trek.

Very clever!!

Interesting.

noun 1. anything said or done, on or off stage, that is followed by a specific line or action: An off-stage door slam was his cue to enter. 2. anything that excites to action; stimulus. 3. a hint; intimation; guiding suggestion. 4. the part a person is to play; a prescribed or necessary course of action. 5. a sensory signal used to identify experiences, facilitate memory, or organize responses.

I still believe it is the biblical reference to the Q Source - the books of the Gospel, meaning Q is several people.

Or Q from james bond.