Conversation so far:
How was Luke Skywalker created?
went through multiple design changes.
Who created him?
George Lucas.
What year was he created?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Luke's lack of screen time in The Force Awakens was due to concerns by screenwriter Michael Arndt.
Who played Luke Skywalker?
Hamill.

Question: What was the concept of Luke Skywalker?
Self-contained rewrite: What was the concept of Luke Skywalker?