Ruby Martinez is played by Jason Genao
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Netflix's On My Block: Meet the season 4 cast
3. Ruby Martinez is played by Jason Genao
Jason Genao plays Ruby Martinez. The 25-year-old Dominican-born American actor is probably most known for his role as Napoleon in Netflix’s The Get Down. He’s also had roles in Logan and Law & Order: Special Victims Unit. Jason is 5ft 1 1/2 inches tall, in case you were wondering.