
Rodney James Alcala was an American serial killer and rapist who was sentenced to death in California for five murders committed in that state between 1977 and 1979, and received an additional sentence of 25 years to life after pleading guilty to two homicides committed in New York in 1971 and 1977. Alcala's true number of victims remains unknown and could be much higher.

Vitaly Borker, known by pseudonyms "Tony Russo", "Stanley Bolds" and "Becky S", is an American convicted felon who has twice served federal prison sentences for charges arising from how he ran his online eyeglass retail and repair sites, DecorMyEyes and OpticsFast. Customers who complained about poor service and misfilled orders for high-end designer eyewear were insulted, harassed, threatened and sometimes made the victim of small scams. After going into online retail following a short career as a computer programmer for several Wall Street firms, Borker encountered difficult customers whom, he said later, were rude, lied to him and cost him money unnecessarily. He decided to be rude and unscrupulous with them in return, and learned to his surprise that on the Internet there was no such thing as bad publicity since the many posts with links to his site on complaint sites such as Ripoff Report appeared to drive traffic to his sites due to how Google's PageRank algorithm worked at that time, putting his site higher in results for searches on brand names than even those brands' websites, and making him money.

Fjotolf Hansen, better known by his former name Anders Behring Breivik and by his pseudonym Andrew Berwick, is a Norwegian far-right domestic terrorist who committed the 2011 Norway attacks on 22 July 2011. On that day, he killed eight people by detonating a van bomb at Regjeringskvartalet in Oslo, then killed 69 participants of a Workers' Youth League (AUF) summer camp in a mass shooting on the island of Utøya — the most fatalities by a single gunman.

Theodore Robert Bundy was an American serial killer who kidnapped, raped, and murdered numerous young women and girls during the 1970s and possibly earlier. After more than a decade of denials, he confessed to 30 homicides, committed in seven states between 1974 and 1978. His true victim total is unknown, and could be much higher.
Elizabeth Diane Downs is an American criminal who murdered her daughter and attempted to murder her other two children near Springfield, Oregon, in May 1983. Following the crimes, she told police a man had attempted to carjack her and had shot the children. She was convicted in 1984 and sentenced to life in prison plus fifty years. She briefly escaped in 1987 and was recaptured.

Joseph Edward Duncan III was an American convicted serial killer and child molester who was on death row in federal prison in conjunction with the 2005 kidnappings and murders of members of the Groene family of Coeur d'Alene, Idaho. He was also serving 11 consecutive sentences of life without parole in conjunction with the same crimes as well as the 1997 murder of Anthony Martinez of Beaumont, California. Additionally, Duncan confessed to — but had not been charged with — the 1996 murder of two girls, Sammiejo White and Carmen Cubias, in Seattle. At the time of the attack on the Groene family, Duncan was on the run from a child molestation charge in Minnesota.

Rodrigo Roa Duterte, also known as Digong and Rody, and by the initials PRRD, is a Filipino politician who is the 16th and incumbent president of the Philippines and the first from Mindanao to hold the office.

Luke Carey Ford is an Australian/American writer, blogger, and former pornography gossip columnist.

Antoinette Renee Frank is a former officer of the New Orleans Police Department (NOPD) who, on March 4, 1995, committed a violent armed robbery at a restaurant which resulted in the killing of two members of the family who ran the establishment, and fellow NOPD officer Ronald A. Williams II. She was aided by her probable lover, drug dealer Rogers Lacaze. Frank currently resides at the Louisiana Correctional Institute for Women in St. Gabriel, Louisiana, the only woman on the state's death row.

Guy Georges is a French serial killer, dubbed The Beast of the Bastille, who was convicted of murdering seven women between 1991 and 1997.

Noshir Sheriarji Gowadia is a former design engineer and convicted spy for several countries. He became one of the creators of the B-2 Spirit stealth bomber during his career at Northrop Corporation but was arrested in 2005 on espionage-related federal charges.

Charles Julius Guiteau was an American writer and lawyer who assassinated United States President James A. Garfield on July 2, 1881. Guiteau falsely believed he had played a major role in Garfield's victory, for which he should be rewarded with a consulship. He was so offended by the Garfield administration's rejections of his applications to serve in Vienna or Paris that he decided to kill Garfield, and shot him at the Baltimore and Potomac Railroad Station in Washington, D.C. Garfield died two months later from infections related to the wounds. In January 1882, Guiteau was sentenced to death for the crime, and was hanged five months later.

Man Haron Monis was an Iranian-born refugee and Australian citizen who took hostages in a siege at the Lindt Chocolate Café at Martin Place, Sydney on 15 December 2014, lasting for 17 hours, until the early hours of the following morning. The siege resulted in the death of Monis and two hostages.

John Warnock Hinckley Jr. is an American man who attempted to assassinate U.S. President Ronald Reagan in Washington, D.C. on March 30, 1981. Using a .22 caliber revolver, Hinckley wounded Reagan, police officer Thomas Delahanty, and Secret Service agent Tim McCarthy. He critically wounded Press Secretary James Brady, who was permanently disabled in the shooting and died from his injuries 33 years later.

Gregory Sol Hyatt is an American political activist and a former attorney and politician. He was a candidate for Governor of Massachusetts in 1986, but dropped out of the race due to allegations of forging names on his nomination papers, having ties to organized crime, and erratic personal behavior.

Sumarti Ningsih was found dead, and Seneng Mujiasih near death, on November 1, 2014, in a luxurious one-bedroom apartment in Wan Chai, Hong Kong. Mujiasih, who was pronounced dead shortly after being found, also used the name Jesse Lorena Ruri. The apartment was rented by Rurik George Caton Jutting, who was convicted of their murders on 8 November 2016.

The Winnenden school shooting occurred on the morning of 11 March 2009 at the Albertville-Realschule, a secondary school in Winnenden in southwestern Germany, followed by a shootout at a car dealership in nearby Wendlingen. The shooting spree resulted in 16 deaths, including the suicide of the perpetrator, 17-year-old Tim Kretschmer, who had graduated from the school a year earlier. Nine people were injured during the incident.

Christian Michael Longo is a convicted murderer who killed his wife and three children in Oregon.

Peter Langkjær Madsen is a Danish convicted murderer, former engineer and entrepreneur. In April 2018, he was convicted of the 2017 murder of Swedish journalist Kim Wall on board his submarine, UC3 Nautilus, and sentenced to life imprisonment.

Timothy James McVeigh was an American domestic terrorist responsible for the 1995 Oklahoma City bombing that killed 168 people, 19 of whom were children, and injured more than 680 others, and destroyed one third of the Alfred P. Murrah Federal Building. The bombing was the deadliest act of terrorism in the United States prior to the September 11 attacks. It remains one of the deadliest acts of domestic terrorism in U.S. history.

Mohammed Merah was an Algerian-French jihadist who admitted to killing seven people, including three children, in several shootings in Southwestern France in March 2012. He was killed following a police siege and standoff.

Elizabeth Ann Smart was kidnapped at age fourteen on June 5, 2002, by Brian David Mitchell from her home in the Federal Heights neighborhood of Salt Lake City, Utah, United States. She was held captive by Mitchell and his wife, Wanda Barzee, on the outskirts of Salt Lake City, and later, in San Diego County, California. Her captivity lasted approximately nine months before she was discovered in Sandy, Utah, approximately 18 miles (29 km) from her home.

Dennis Andrew Nilsen was a Scottish serial killer and necrophile who murdered at least twelve young men and boys between 1978 and 1983 in London. Convicted at the Old Bailey of six counts of murder and two of attempted murder, Nilsen was sentenced to life imprisonment on 4 November 1983, with a recommendation that he serve a minimum of twenty-five years. This recommendation was later changed to a whole life tariff in December 1994. In his later years, Nilsen was imprisoned at Full Sutton maximum security prison.

Ezra Weston Loomis Pound was an expatriate American poet and critic, a major figure in the early modernist poetry movement, and a fascist collaborator in Italy during World War II. His works include Ripostes (1912), Hugh Selwyn Mauberley (1920), and his 800-page epic poem, The Cantos (c. 1917–1962).

Vidkun Abraham Lauritz Jonssøn Quisling was a Norwegian military officer, politician and Nazi collaborator who nominally headed the government of Norway during the country's occupation by Nazi Germany during World War II.

Dennis Lynn Rader is an American serial killer known as BTK, the BTK Strangler or the BTK Killer. Between 1974 and 1991, Rader killed ten people in Wichita and Park City, Kansas, and sent taunting letters to police and newspapers describing the details of his crimes. After a decade-long hiatus, Rader resumed sending letters in 2004, leading to his 2005 arrest and subsequent guilty plea. He is serving ten consecutive life sentences at El Dorado Correctional Facility in Prospect Township, Butler County, Kansas.

On June 28, 2018, a mass shooting occurred at the offices of The Capital, a newspaper serving Annapolis, Maryland, United States. The gunman, Jarrod Ramos, killed five employees with a shotgun and injured two others who were trying to escape. Ramos was arrested shortly thereafter. He pleaded guilty but not criminally responsible to 23 charges; in July 2021, a jury found him criminally responsible.

Scott Levy is an American professional wrestler, actor, and podcaster better known by his ring name, Raven. He is known for his appearances with professional wrestling promotions including Extreme Championship Wrestling (ECW), World Championship Wrestling (WCW), World Wrestling Federation/Entertainment (WWF/E) and Total Nonstop Action Wrestling (TNA). Widely recognized as "one of the best talkers in wrestling", Raven is known for his "psychological heel tactics" and grunge-inspired gimmick. His feud with The Sandman in the mid-1990s has been described as "one of the most emotional rivalries in professional wrestling's history".

Johann "Jack" Unterweger was an Austrian serial killer who committed murder in several countries – West Germany, Austria, Czechoslovakia, and the United States. Initially convicted in 1974 of a single murder, Unterweger began to write extensively while in prison. His work gained the attention of the Austrian literary elite, who took it as evidence that he had been rehabilitated.

Shmuel "Sam" Vaknin is an Israeli writer and professor of psychology..He is the author of Malignant Self Love: Narcissism Revisited (1999), was the last editor-in-chief of the now-defunct political news website Global Politician, and runs a private website about narcissistic personality disorder (NPD). He has also postulated a theory on chronons and time asymmetry.

Hans Van Themsche is a Belgian student who in 2006 shot three people, killing two and severely injuring another, before being shot by police and incapacitated. He was sentenced to life in prison in 2008.

Suzane Louise von Richthofen is a Brazilian woman who was convicted of murdering her parents on October 31, 2002, with the help of her boyfriend and his brother. She was put on trial in São Paulo in July 2006 and was sentenced to 40 years in prison.

On 9 January 2008, 22-year-old Sophie Kate Elliott was stabbed to death by ex-boyfriend Clayton Robert Weatherston, in Dunedin, New Zealand. The crime and trial were covered extensively in the news media, and contributed to the government abolishing the partial defence of provocation in cases of murder.