Poisoner

A Poisoner are, as titled, person who uses poison in their attacks against people.

Types of Poisoners

 * 1) True Believers - They are political terrorists or religious cult members.
 * 2) Extortionists - They hold companies hostage for ransom.
 * 3) Pranksters - They are teenagers who do it as a practical joke and usually don't mean any harm.
 * 4) Avengers - They seek to exact revenge using poison as their weapon.

On Criminal Minds

 * Chad Brown
 * Chloe Donaghy
 * Edward Hill
 * Megan Kane
 * Ervin Robles
 * Jeremy Sayer
 * Suzanne Silvan
 * Paul Silvano
 * Will and Chris Summers

Real World

 * Amerithrax
 * The Tylonel Killer