Prisoners can be quite crazy in different ways. Sometimes they are psychotic, sometimes they’re mad, and sometimes they’re just insanely smart. So whether they are one of the scariest prisoners on death row, or they have figured out how to trade stocks from their jail cell, these are the 25 Most Insane Prisoners Ever Caught!
Gary Lee Sampson

A convicted murderer, Sampson threatened to kill death row officials and bragged about his murders. He also allegedly spent donation money on cappuccinos.
Ronnie McPeters

While on death row, Ronnie would smear feces on the walls, the floor, and himself. He also soaked himself in urine and told a psychiatrist that he was filming a commercial.
Tsutomu Miyazaki

Japanese serial killer Tsutomu Miyazaki came to be known as the “Human Dracula” because he drank the blood of his victims. He apparently spent most of the trial drawing cartoon images of Rat Man, an alter ego who he claimed made him kill. He also wasn’t repentant at all, even before being executed.
Jeffrey Dahmer

A serial killer who was known for eating his victims, Jeffrey was eventually beaten to death in prison by another inmate.
Carl Panzram

A serial killer, Carl spat in the executioner’s face before having a hood placed over his head. When he was asked for last words, he replied “Yes, hurry it up, you Hoosier bastard! I could kill a dozen men while you’re screwing around!”
Photos: Feature Image: Barnellbe, Veave in jail, CC BY-SA 3.0, 25. pixabay (public domain), 24. publicdomainpictures.net (public domain), 23-22. pixabay (public domain), 21. wikimedia commons (public domain), 20. AEMoreira042281, NYC Subway R160A 9237 on the E, CC BY-SA 3.0, 19. Mistyday22, Ed Gein, CC BY-SA 4.0, 18. pixabay (public domain), 17-14. wikimedia commons (public domain), 13. Crisco 1492, Mount Merapi in 2014, CC BY-SA 3.0, 12. Stephen Boisvert via flickr, CC BY 2.0, 11. pixabay (public domain), 10. NaTaLiia0497, Luis Alfredo Garavito Cubillos, CC BY-SA 3.0, 9-7. pixabay (public domain), 6. via imgur (fair use; illustrative purposes only), 5. Bundesarchiv, Bild 102-11502 / CC-BY-SA 3.0, Bundesarchiv Bild 102-11502, Polizeiaufnahme eines Massenmörders, CC BY-SA 3.0 DE, 4-1. pixabay (public domain)