Name | Years active | Proven victims | Possible victims | Status | Notes | Ref |
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Andrés Leonardo Achipiz | 2009–2013 | 12 | 35 | Incarcerated | Known as "The Fish"; psychopathic hired killer who killed in Bogotá involved in the drug trade | [4] |
José William Aranguren | 1956–1964 | 115 | 115 | Killed in a shootout with law enforcement | Bandit who murdered people across three municipalities, together with three accomplices | [5] |
Daniel Camargo Barbosa | 1974–1986 | 72 | 180 | Murdered in prison by a victim's relative | Known as "The Sadist of El Charquito"; raped and murdered young girls across Colombia and Ecuador | [6] |
Manuel Octavio Bermúdez | 1999–2003 | 21 | 50+ | 56 years; commuted to 26 years | Known as "The Monster of the Cane Fields"; raped and murdered children in rural Valle del Cauca | [7] |
Cristopher Chávez Cuellar | 1990s–2015 | 6 | 15+ | 40 years | Known as "The Soulless"; murdered various people around three municipalities, including three underage brothers | [8] |
María Concepción Ladino | 1994–1998 | 6 | 6 | 40 years | Known as "The Killer Witch"; fraudster who poisoned victims she had defrauded | [9] |
Luis Garavito | 1992–1999 | 142 | 193+ | Died in prison | Known as "The Beast"; tortured, raped, mutilated and murdered children across Colombia, Ecuador and Venezuela | [10] |
Sandra Giraldo | 2008–2011 | 3 | 3+ | Incarcerated | Together with Emilsen Rojas and several accomplices, she led "The Black Widow Gang"; defrauded and poisoned men for their life insurance policies | [11] |
Pedro López | 1969–1980 | 110 | 350+ | Fugitive | Known as "The Monster of the Andes"; raped and killed young girls across Colombia, Ecuador and Peru | [12] |
Luis Alberto Malagón Suárez | 1995–2001 | 6 | 6+ | Incarcerated | Known as "The Sadist of Rincón"; kidnapped, raped, and killed five girls from 1995 to 1997 in Suba, and later killed his wife | [13] |
Tomás Maldonado Cera | 2002–2018 | 7 | 10 | Incarcerated | Known as "The Satanist"; murdered victims on or around Halloween night, then carved Satanic symbols on their bodies | [14] |
Jaime Iván Martínez | 2005–2016 | 4 | 25 | 42 years | Known as "The Guarne Killer"; strangled young children and his wife in Guarne; suspected in other murders | [15] |
Élver James Melchor Bañol | 1990s–2019 | 4 | 4 | 60 years | Known as "The Predator of Picaleña"; serial child rapist who murdered a girl in Tolima after being released on parole for three similar murders and sex crimes | [16] |
John Jairo Moreno Torres | 1997–1998 | 4 | 20 | Murdered in prison by fellow inmates | Known as "Johnny the Leper"; underage gang leader who murdered people who interfered with his criminal activities | [17] |
Yadira Narváez | 2011 | 5 | 6+ | 100 years | Known as "The Queen of Scopolamine"; poisoned men with Carbofuran to steal their money | [18] |
Hernando Arturo Prada | 1990s–1999 | 10 | 10+ | Killed by a paramilitary squad while on the run | Known as "The Angel of Death"; gang leader who killed people in Bucaramanga | [19] |
Luis Gregorio Ramírez Maestre | 2010–2012 | 30 | 30 | 34 years | Known as "The Monster of Tenerife"; tortured and murdered motorists he came across on highways | [20] |
Emilsen Rojas | 2008–2011 | 3 | 3+ | Incarcerated | Together with Sandra Giraldo and several accomplices, she led "The Black Widow Gang"; defrauded and poisoned men for their life insurance policies | [21] |
Esneda Ruiz Cataño | 2001–2010 | 3 | 3 | Incarcerated | Known as "The Predator"; poisoned three husbands for their life insurance policies | [22] |
Efraín Sarmiento Cuero | 2017–2023 | 3 | 3 | Incarcerated | Known as "The Beast"; murdered girlfriends during arguments, including one during a conjugal visit in prison | [23] |
Fredy Armando Valencia | 2012–2014 | 8 | 100+ | 36 years | Known as "The Monster of Monserrate"; strangled women around Monserrate, then had sex with their bodies | [24] |
Juan Carlos Villa | 2012–2023 | 11 | 11 | Incarcerated | Murdered 11 people across various municipalities. | [25] |
Rubén Villalobos Herrera | 2012–2017 | 9 | 9 | Incarcerated | Known as "The Black Canes Monster"; raped and murdered women in Villavicencio, then had sex with their bodies post-mortem | [26] |
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