In The Stranger Things Series :
In real life:
Caleb McLaughlin, born October 13, 2001 in Carmel (New York, United States) is an American actor. He began his career on the Broadway stage where he played the young Simba in the musical The Lion King. He is best known for his interpretation of Lucas Sinclair in Stranger Things.

Caleb McLaughlin, whose real name Caleb Reginald McLaughlin, He attended Kent primary school and then George Fischer Middle School for a year. At 5 years old, McLaughlin moves to New York He studies dance for a year at the Happy Feet Dance School in Carmel, NY, then at the Harlem School of the Arts under the direction of Aubrey Lynch, former producer of "The Lion King (musical comedy)".
Age : old.
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