Revenge Killers

Gilbert Postelle was convicted and executed for murdering four innocent people.

Gilberto Nunez is a person accused of a crime, as indicated by his statements and the judge's remarks.

Glenn Summerford is a person who committed crimes, as suggested by the title 'Glenn Summerford's Crimes'.

Glennon Engleman is a serial killer dentist, as depicted in the 2023 movie 'FBI Files: Serial Killer Dentist'.

Graham Coutts is a perpetrator featured in 'World’s Most Evil Killers' for his alleged criminal activities.

Graham Young is a documented serial killer, famously known as The Teacup Poisoner

Grant Hardin is a former police officer who was exposed as corrupt and involved in criminal activities.