Joselyn Alejandra Niño (died on 13 April 2015), commonly referred to by her alias La Flaca (English: The Skinny One), was a Mexican suspected assassin of the Gulf Cartel, a criminal group based in Tamaulipas, Mexico.

She gained popularity on social media on 5 January 2015, when an anonymous person uploaded a picture of her posing with a firearm in an organized crime leak page.

She was found dead on 13 April 2015, when Mexican authorities discovered her dismembered body inside an ice cooler at a parking lot in Matamoros.

This moniker is also a reference to Our Lady of Holy Death, a female skeleton saint venerated by thousands in Mexico and popular among some drug traffickers.

[6] Organized crime groups in Mexico often recruit females like Niño for their build and girly looks to disguise them from rival gangsters and law enforcement.

[7] Women like Niño sometimes begin their criminal careers as organized crime lookouts or prostitutes before they climb their way up to foot soldier ranks.

[3] The picture identified her as a Gulf Cartel hitwoman based out of Río Bravo, Tamaulipas;[10] she was smiling in front of the camera and posing with a firearm and bullet proof vest.

[13] The picture's background stirred commentary on the apparent low-income lifestyle of cartel-employed assassins, which seemed to contradict the notion that those working for organized crime groups in Mexico live luxuriously.

[14] In addition, others discussed in the comment section whether or not lifestyles like Niño's were worth the risk when organized crime bosses reportedly enjoy most of the luxuries.

[14] On 13 April 2015,[12] Mexican authorities in Matamoros, Tamaulipas, discovered Niño's dismembered body inside an ice cooler.