Roberto Alvarado is called “Piojo” because he said the nickname came from his admiration for former Club América player Claudio “Piojo” López. In interviews he explained that he used to watch López’s videos and liked his style, so the nickname stuck.

Why the nickname fits

  • It is not a family name or official stage name.
  • It comes from football culture, where players often get nicknames from admired stars.
  • The nickname became widely used in media and by fans.

In context

A Chivas club profile also refers to him as “Piojo” Alvarado, showing the nickname is now part of his public identity.

TL;DR: He’s called “Piojo” because it traces back to Claudio “Piojo” López, the player Alvarado admired growing up.