Chicho is a sicario for Teresa in Season 4.
- Barrios will be playing Chicho, one of Teresa's key henchmen, alongside David Bianchi. 
Pote asks Chicho to deliver a shipment to Oksana Volkova for him while Teresa is in a coma. While transporting the shipment, he is attacked by Elias and his men, who hurl rubber tires at them to get them to stop and shoot at them. Chicho is shot and hides in the forest as the driver is burnt to death with a flamethrower. Elias burns the shipment. Later, Chicho calls Pote from a payphone and tells him what happened.
Chicho accompanies George and James to the shoot out location in the beginning of the season. Chicho is a loyal sicario who starts working under James and to whim Teresa leaves the bar after her exit.
Chicho helps Pote fight Boaz after Boaz is out of prison in four years. Chicho ends up an associate of Dumas and they make plans to build the Waterfront property together.