Nothing is known of Yago's life prior to or as the outbreak began.
At some point in the apocalypse, Yago somehow came into contact with a group named "The Saviors" which he subsequently joined.
Yago and his accomplices are seen ambushing Carol from behind, he then orders his men to take the guns to the truck. As they follow his orders, he briefly pursues Carol.
Yago is then seen being ambushed by Carol in an attempt to stop him and the Saviors from transferring the .50 Caliber guns from the current outpost to the Sanctuary. Upon seeing her, he opens fire, along with the rest of his group, where both he and Carol exchange bullets in a gunfight. Knowing she was outgunned, Carol used her smarts and surrendered, telling Yago that there's more Kingdom soldiers on the outskirts ready to ambush them.
He orders Joey to restrain her, but to his surprise, Carol was merely playing them all and manages to hold Joey hostage as a way to negotiate her way out of the outpost. Joey pleads with Yago not to shoot, but he orders everyone to do so any way, showing his authority and killing Joey in the process, but not hitting Carol.
After Carol managed to take out two out of the four Saviors attacking her, Yago and another Savior takes cover behind the vehicle containing the Caliber weaponry. Upon realizing Ezekiel is in trouble, she chooses to help him rather than kill Yago and his accomplice. Because of this, the two take this as an opportunity to flee the outpost on the truck.
Supposedly safe, Daryl manages to take out the one Savior manning the .50 Caliber gun on the back of the truck and Rick hijacks and vehicle and stabs Yago with his knife, injuring him and throwing him out of the vehicle, though not killing him. Rick told Daryl after retrieving the guns to see whether he's alive or not.
Yago is seen on the ground bleeding out, Daryl asks him “at the chemical plant who won”, he gets angry at his answer, Yago replies ”the king, the lady with the short hair, the axe man” killed his people and all of the Kingdom soldiers are dead. After Daryl walks away, Yago succumbs to his wounds and dies. Rick then stabs him in the head to prevent reanimation.
- Killed By
While attempting to stop Yago from reaching the Sanctuary with the Savior heavy weapons, Rick jumps in Yago's truck and stabs him in the gut, before throwing him onto the roadway.
Shortly thereafter, Yago dies from his wound and Rick stabs him in the head to prevent reanimation.
This list shows the victims Yago has killed:
- His actor, Charles Halford, is one of the two voice actors from Telltale Games' The Walking Dead that has appeared in the show, along with Brina Palencia, the actress of Paige and Ana.