Ruby Martinez is played by Jason Genao
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Netflix's 'On My Block': Meet the season 3 cast

3. Ruby Martinez is played by Jason Genao
Jason Genao plays Ruby Martinez. The 22-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, if you were wondering…