"Loyalty trumps victory, compa" ― Cesar Diaz Cesar Diaz" is the tritagonist on the Netflix series "On My Block". He is portrayed by Diego Tinoco. Cesar is an intelligent teen forced into gang life by his brother Spooky once he was released from prison. He is a natural leader who is very caring toward his friends. He is shown to be very laid back and very easygoing. He is described by Monse as "the glue of our crew". Cesar is a Latino male, he has tan skin and black hair. He has a very fit build