Brutale was a top-level interrogator/torturer for the secret police in the Latin American country of Hasaragua, until a revolution forced him to flee. In his native Hasaragua, Guillermo Barrera served the secret police of his government as a savage interrogator, extracting confessions efficiently with blades and tools used for surgery. When the Marxist regime of Hasaragua fell, Barrera escaped the country to America, fleeing execution for the atrocities he committed.
Adopting the name Brutale, Barrera put his "Surgical Skills" to use as a hired assassin. He eventually began working for Blockbuster in Blüdhaven while donning a costume that resembles a gargoyle. He battled against Nightwing on several occasions.
- Hand-to-Hand Combat (Advanced)
- Weaponry: He is an expert with all forms of knives and blades, being able to both fight superbly and inflict horrible pain on his victims. He has a variety of scalpels, throwing knives and other razor keen blades that he utilizes.
- Various Blades
- 27 Appearances of Guillermo Barrera (New Earth)
- 7 Images featuring Guillermo Barrera (New Earth)
- Quotations by or about Guillermo Barrera (New Earth)
- Character Gallery: Guillermo Barrera (New Earth)
Secret Society of Super-Villains member