Nebial

Nebial is the original white-eyed demon.He is the current grand torturer of Hell.He is stronger than Abaddon even if she is a Knight of Hell.He will become a major reccuring character.

Personality
He is calm collected and outspoken he ussualy just goes buisness but if he needs to he ussualy just shows his white eyes and people talk buisness,He is a extremely powerful and feared demon.Abaddon was scared and respectful the first time he meet him,She says thats he's a "Legend" and thats she's heard alot about him.She even flies the scene with no sign off confrotation when she sees Nebial  has got angry.He is very intelligent and quite a cabale strategist.He when he couldn't kill Abaddon he said "Maybe I can't kill you,but I can send you away with a one-way ticket" so he sent Abaddon to hell and she couldn't come back.

Powers and Abilities
He's an extremely powerful demon that even Abaddon feared and respected even a sign of anger in Nebial caused Abaddon to flee immediatly.He can't kill her out he can 100% disable and overpower her he said to Dean and Sam "If she can't be killed It doesn't mean she can't be destroyed" meaning that he can't kill her but can actually make her a mess of a Knight she was before.
 * Access to/from Hell - High ranking demons such as Azazel, Alastair,Crowley and Nebial can easily teleport themselves back and forth between Earth and Hell, without the need for any complex summoning ritual or assistance. This however, varied among high-tier demons, as some were kept imprisoned due to unknown reasons and methods.Nebial can alos use this power.
 * Enhanced Immunity - As a general rule, the more powerful the demon, the more resistant they are to harm and common anti-demon methods such as salt and Holy Water. High ranking demons like Alastair are immune to the Killing Touch of normal Angels and both he and Abbadon are immune to the killing effects of the Demon-killing knife though it causes them pain. The Knights of Hell could only be killed by the First Blade and Cain, the original Knight, is completely immune to the knife to the point it doesn't even hurt him.Nebial is immune to a smiting of a Seraph (Castiel).
 * Memory Manipulation - Displayed by Abaddon, Crowley and Azazel. Abaddon was able to read the memories of individuals, Crowley stated that he "scrubbed" Kevin's short term memory and Azazel was able to erase Dean's memory of his conversation with Tessa.Nebial also erased Crowley's memory about meeting him. (In My Time of Dying)
 * Advanced Exorcism - Nebial sent Abaddon to Hell for about half a year.She couldn't do anything about it.
 * White Light-Nebial also has this ability.
 * Spell Casting:He non-verbaly enchanted his the state of Wisconsin so no demon can get in the state.This is like Cain's enchanting of his house.
 * Teleportation:He can teleport anywhere.