I'll try to keep repeating info fairly low. Most of the info presented

Name: [UNKNOWN]
Alias: Omen
Species: Mutated Raven
Age: Appears to be early to mid 20's
Height: Appears to be about 5ft 9in
Weight: Estimated to be 150~170lbs
Weapons: Talons, Tail, Vest tails(bladed tips)

Affiliation: [UNKNOWN as of T.O.D]

Combat Capabilities
Omen has demonstrated fairly sufficient fighting ability able to keep toe to toe in close quarters combat. His fighting style has been identified to dancing but of a fusion of Flamenco and Capoeira. With percussive footwork he is able to create harmless(relatively) sparks with his talons. While large arching kicks that start from the ground are able to throw these sparks. By themselves they are merely distractions but with the constant friction his talons can reach high temperatures that are noticeable with an orange glow radiating from the tips. This makes them far more noticeable but could distract from his tail. Never the less if the kicks he delivers have a reckless amount of strength with minimal control he is able use the momentum from the kick to have his tail cover the recovery.

However his main goal when in combat is to defuse the situation rather than kill as such aggressors are more likely to be in contact with his softer feet but even they can knock someone on their ass. Though in a far more controlled situation he will only hold his talons to someone's throat convince them to concede.

Power in Depth Analysis
As it was explained Omen's tail can sap energy from an initial target and give it to another including himself. And the length of the weakness/boost is dependent on how long the tail maintained contact with the initial target.
However, his tail can only activate this affect with direct contact of the target's epidermis or a porous material that is no more than 4mm in thickness that is in direct contact of it. In addition to this the tip of his tail is able to sharpen to become a bladed weapon that can cut through considerably dense material when enough speed is maintained.


Stats Explained
Strength
Omen falls short when it comes to raw power as his upper body is far less developed than his lower half by comparison as Omen is forced to rely on his legs more often

Poise
Not a stat that is normally calculated but Omen is able to maintain his composure very well in stressful situations due to this aggressors tend to have a difficult time picking up on emotions or topics that can strike a nerve. In addition to these benefits he is able to mingle among high profile people as if he belonged there.

Speed
Despite his average overall speed when in combat he is able to quickly rotate on a dime to build up momentum for kicks or tail slashes

Range
Omen's Power and fighting capability are close-range which can be a severe weakness however his tail and legs are able to off-set that weakness by a bit albeit a minute margin. If an aggressor is aware of his tail the only options they have is to stay at range since even a moment of weakness can be detrimental and can turn the tide in Omen's favor.

Technique
His ability to utilize his Power in tandem with his unique fighting style keep his aggressors on their toes as he leads the dance. Even though his power is not as "flashy" as others he does not heavily rely on it and as a result the application of his actions become far more refined as a result. Utilizing his environment, his reflexes and other crucial factors in close quarters combat. Omen

Notes on record
-He views any aggressor as a dancing partner, regardless if they are heroes or villains
-In an effort to understand his identity the feathers in his chest pocket are of high priority
-Even when looking amongst high profile avian families there are no records present of a Raven with a demon tail. It is now speculated that he is not working alone.


And here is an in-depth explanation of Omen the Raven might diverge the Heroes and Villains into a separate world universe but currently unsure.

Artwork and the character, Omen, are all drawn and owned by me:   fates_art