@benit149: Okay, one thing sticks out to me so far. I'm wary of mind-control-ish stuff, how does Sheol's negative emotions power function?

Also:

Name: Dlanor A. Knox, also known as "Death Sentence Dlanor" or "Dlanor of the Ten Wedges"
Age: Was born in 1947. Stopped aging in 1957, exact age from there unknown. As such, she appears about 10.
Gender: Female
Appearance: [url=http://images2.wikia.nocookie.net/__cb20120127221727/umineko/images/b/b3/Dla_a11_def1.png]"A check of this location has been FINISHED."[/url] [url=http://images4.wikia.nocookie.net/__cb20111211170315/umineko/images/thumb/0/01/Dlanor1.jpg/254px-Dlanor1.jpg]Full body shot for reference[/url]
Canon, Alternative, or OC?: Canon
Universe of Origin: Umineko no Naku Koro ni(Heaven)
Personality: Dlanor is extremely calm, focused, and collected. She is dedicated to her often violent duty of executing violators of Knox's Decalogue. She will not, however, pursue a violator unless the Court of Heaven orders her to. In addition, she will only use the Red Key against those who threaten her or hinder her mission. Violators are frequently the extremely powerful reality-warping magic users known as Witches. Dlanor strives to eliminate evil, and will seek to do so whenever possible. She believes magic is only bad when used as a tool for evil. This allows her to form friendships with Witches who do not use their magic to preform evil. She is stoic to the point of not showing pain even after being pierced by multiple spears while preforming her duty. She shows no mercy to those who she is executing. In spite of this serious and stoic personality, Dlanor has a sweet tooth and often reads certain kinds of comics, and has a dislike of being doted on. She hates paperwork and most enjoys actually being deployed or having free time to do with what she wishes. She even has some childish behaviors. During executions or fights, she often drops her serious and stoic air in exchange for an outright insane expression and crazed behavior.
Abilities/Weapons: Dlanor's natural abilities include a slow healing ability(it takes hours, but her wounds will heal perfectly), being insanely durable and hard to kill(don't destroy the brain and she'll probably be fine) and being so stoic she doesn't show pain. She wields the Red Key and the Blue Key, a pair of powerful conceptual weapons. The Red Key, a huge longsword, is her weapon of choice. It is capable of annihilating concepts that Dlanor is capable of denying. This allows her to literally destroy an argument, and by doing so damage an enemy. The Red Key can also be used as a regular, extremely deadly, sword. It cannot be blocked(unless the weapon doing so is magical) or slowed, and teleportation is ineffective against it, however it is possible to evade it unless you originate from the Umineko universe(in which case it's an unblockable undodgeable unslowable instrument of death). The Blue Key is a shortsword that forces self-denial in the target, and can be slowed or blocked, and dodged more freely. Dlanor may not use the Red Key unless it is against violators of Knox's Decalogue, or she is threatened or hindered.
Backstory: Dlanor A. Knox is an Inquisitor of Heaven. Involved with the events of the Witch's Game on Rokkenjima island, she has since been ordered to track down and kill violators of Knox's Decalogue outside of her home universe. She intends to follow these orders to the end. However, as part of an agreement between her universe's Heaven and the Agency, Dlanor has come to work for the Agency as well(assisted by [url=http://images.wikia.com/umineko/images/2/2c/Gertrude1.jpg]Gertrude[/url] and [url=http://images1.wikia.nocookie.net/__cb20111211170224/umineko/images/b/bf/Cornelia1.jpg]Cornelia[/url], her angelic assistants).
Faction: UMMA

Name: Prince of Hell, Leviathan. More frequently goes by "Levi"
Age: She's somewhere in the thousands, now. Physically... not so much.
Gender: Female
Appearance: [url=http://vitavitaar.deviantart.com/art/Leviathan-Cropped-389057303]"Hmph!"[/url] and a commission from a very talented artist... [url=http://vitavitaar.deviantart.com/art/Para-Vitavitaar-417211147]"Wh-wh-what?!"[/url]
Canon, AU, or OC?: OC
Universe of Origin: Original Setting
Personality: Leviathan is an irritable girl. As the demonic representation of Envy, she frequently is extremely jealous of others, often directly complaints towards them or declaring her jealousy. One of the things she finds herself most jealous of is mature, adult bodies. While she doesn't resent her childish form, even agreeing with those who find her cute, she would enjoy having an adult body even if it was only for a little while. While she frequently experiences envy, this does not entirely define her. Leviathan is capable of being quite nice, even thought her kindness may be hidden behind a thin veil of annoyance and anger. Still, she is more likely to be nice then antagonistic... even if her niceness is punctuated with complaints. She is easily frustrated and embarrassed, as well. She likes swimming and surfing.
Abilities/Weapons: Leviathan is one of the Seven Princes of Hell, the seven strongest demons in her world. She is quite capable of taking on a dragon(in her universe, dragons are immensely powerful beings with backup from reality itself) by herself. However, she is the least durable of the Princes, easily injured and taking a longer time to heal injuries. As a demon, Leviathan's healing process works by reverting her back to the state she was in when she first became a demon. While this does not effect all changes to her body(for example, eating more or less), it affects aging and physical injuries. Leviathan's reversion is slower than her fellow Princes', though it becomes more quick the more dangerous the injury is. Like all demons, she is potentially capable of surviving such grievous injuries as decapitation. Leviathan is also far stronger and faster than she appears. She is also capable of generating whirlpools using water or the moisture in the air, which suck targets in. Finally, Leviathan wields a Alchemical Tool, a device created via alchemy that taps into either ambient or internal mana. As Leviathan has no internal mana, her abilities instead stemming from her demonhood, her Alchemical Tool instead operates using ambient mana. It is a large, grey shield, three times as tall and twice as wide as Leviathan herself. The sides are bladed, and a spike extends from the tip. Beneath this tip is a cannon, which is capable of gathering ambient mana and using it to generate a blast of water capable of cleaving through steel.
Backstory: Like all of the original demons in her universe, Leviathan was a human being effected by the fall of the Archangel Lucifer, which caused a fundamental change in her nature and made her into a demon. Spending thousands of years like this, Leviathan has accumulated wealth and acquired a large amount of maids. She has entered the multiverse as a vacation, accompanied by three of her maids.
Faction: N/A

One more character coming as well. ^^;