Jesse Turner is a young, but powerful "Cambion" or "Katako," being a half-human, half-demon creature. According to Castiel, he was destined to become the Antichrist and aid Lucifer in the war against Heaven.
Jesse Turner was conceived when a virginal human woman named Julia Wright becomes possessed by a demon. She manages to regain control of her body long enough to exorcise the demon from her body during labor. She contemplates killing the newborn Jesse for fear that he would be evil but instead gives him up for adoption.
Jesse was adopted by the Turner family in Alliance, Nebraska. Jesse's adoptive parents spend a good deal of time outside their home with him mostly taking care of himself. He was unaware of his birth history or even of the fact that he is adopted. Despite his heritage, he is a fairly normal boy: he attends school, likes soup and believes in many common child-age misconceptions and myths, like the Tooth Fairy.
Powers and Stats
Tier: 10-C normally, potentially 3-B to 3-A with his powers
Name: Jesse Turner, The Antichrist, The Beast
Age: 10 - 11 as of Season 5
Classification: Cambion (Half-Human Half-Demon hybrid)
Powers and Abilities: Reality Warping (Turned Castiel into an action figure, made the Tooth Fairy real, made joke devices like a joy buzzer lethal because he believed they were), Teleportation, Telekinesis, Soul Manipulation, Exorcism/Demon Control, Terrakinesis and likely many others
Attack Potency: Below Average level normally, potentially Multi-Galaxy level to Universe level with his powers (Lucifer is the source of his powers), possibly higher (Described by Castiel that, as the Antichrist, he had the power to destroy the entire Host of Heaven with a mere word)
Speed: Normal Human
Lifting Strength: Regular Human
Striking Strength: Below Average Class
Durability: Below Average level (Can likely amp this with his powers)
Stamina: Average human
Range: Standard melee range; likely Planetary or Cross-Universal for certain abilities
Standard Equipment: None notable
Intelligence: Smart for a Child
Weaknesses: Demon-Killing Knife, Angel Blades, Archangel Blades, etc