Maníaco do Trianon (now a resurrected ISG member) was the nickname given to a criminal active in São Paulo, Brazil, during the late 20th century. He became infamous for committing a series of violent assaults and murders, primarily targeting women and homosexual men in the area surrounding Parque Trianon, a public park in the city’s central district. His MO's included torture, strangulating, stabbing, asphyxiating, etc. The Maníaco do Trianon case remains one of the most notorious criminal cases in São Paulo’s history, often referenced in discussions of urban crime, policing, and public safety. It highlighted the challenges of preventing violent crimes in densely populated urban areas and contributed to increased police presence in public.