Nothing is known about Everardo's life before the apocalypse.
Everardo is first seen with Pablito cleaning a drainage pipe when they find Daniel Salazar among the debris. Worried about being caught with Daniel as they think Dante's men will believe they are scheming to steal water, they alert Lola. Later, Everardo is in the cafeteria with Pablito, Daniel, and the others eating lunch. The next day, Everardo is taken into custody and framed as a thief stealing water, despite being innocent. He watches in horror as Dante Esquivel throws Pablito over the edge to his death and is horrified when Lola is brought to the edge. Fortunately, his life is saved when Daniel takes out Dante and his men, successfully freeing Everardo and his fellow captives.