Marka Ragnos x OBD
Marka Ragnos, attending his own funeral

Name: Marka Ragnos
Origin: Star Wars
Gender: Male
Classification: Human/Sith Hybrid/Dark Lord of the Sith/Ruler of the Sith Empire
Age: Over 5000 years old (postmortem) at the time of Jedi Academy
Powers and Abilities: Superhuman strength, speed, durabilityenhanced senses, various sith sword combat skills, skilled swordsman, skilled unarmed combatant, precognition, telekinesis, telepathy, teleportation (spirit form only), mind manipulation, illusion creation, psychometry, barrier creation (in the form of Force Barrier), absorption (in the form of Force Drain), elemental maipulation (in the form of Force Lightning), energy blasts (his Sceptor was capable of siphoning Force energy out of a location and firing Force Blasts), possession (in the form of Transfer Essence), non-corporeal (spirit form only), immortality (type 1 and 7), matter manipulation on a subatomic scale (as per creating a Holocron, it requires one to make numerous precision alterations to it on a subatomic scale), Battlemind, Sith Alchemy (has created and mutated various creatures like his pet Terentatek), Sith Sorcery, reanimation of the dead with his Sceptor, able to infuse others with the power of the Force with his Sceptor
Weaknesses: Arrogance/Over-confident (like most Sith Lords)
Destructive Capacity: At least continent level+ (the most powerful Sith Lord of his era.  Per his Sith Spirit and talisman being required to summon the Ancient Threat on Yavin IV alongside of the spirits of Tulak Hord, Naga Sadow, and Exar Kun and their own respective talismans, it can be inferred they're all roughly comparable to [though not equal to] one another in terms of raw power.  Also appears to have further empowered Exar Kun and Ulic Qel-Droma upon christening them Dark Lord of the Sith and Apprentice)
Range: Dozens of light years via powerscaling (a weaker Naga Sadow's telepathic range sat around this level)
Speed: Relativistic+ (compared with the likes of Karness Muur and Freedon Nadd); lightspeed reactions augmented by precognition
Durability: Peak human level+ naturally; at least continent level+ with Force amplification (survived as a non-corporeal spirit for thousands of years past his physical death)
Lifting Strength: Peak human+; can be augmented to superhuman levels thanks to Force amplification
Striking Strength: Class GJ+ with Force amplification (able to imbue his Sith Sword with the Force to increase its cutting power.  Regularly beat his pet Terentatek, a species known for their natural high resistance to Force powers)
Stamina: Superhuman+
Standard Equipment: The Sceptor of Ragnos, his Gauntlets (which further amplified his melee combative powers)
Intelligence: Ruled over his Sith Empire for the better part of a century while outmaneuvering all of his Sith rivals.
Notable Attacks/Techniques:

- Force Barrier: Both an offensive and defensive Force power that creates a barrier or wall of Force energy around the intended target, be it self, friend, or foe.   Depending on the strength of the individual, the barrier could only withstand a few attacks before collapsing.

- Force Blast: Marka Ragnos projects concentrated blasts of pure dark side energy at objects or opponents from the Sceptor of Ragnos.

- Force Drain: Marka Ragnos is able to draw life energy from living beings, gradually absorbing it into himself.

Force Lightning: An offensive Force technique that uses Force energy to produce electricity with one or two hands that stream outwards from the fingertips, its speed is usually great enough to catch an opponent off-guard even when prepared, and can be used either in bursts, or simply torrent out in an a gush of agony on its victim.

- Telekinesis: Marka Ragnos can use this through the Force to put his mind literally over matter, capable of blasting opponents, shielding himself or disarming people, its limits are only those of the creativity that Force User has.

- Telepathy: Can easily manipulate others mentally with the Force to trick, deceive, maim or even kill outright. Can also use this power externally or internally when it comes to illusion creation, manifestation, and manipulation.

- Transfer Essence: A radical dark side Force power used to transfer a person's consciousness into another body, or in some cases an inanimate object.  Marka Ragnos presumably used this power to possess the Dark Jedi Tavion Axmis.

Notable OBD Victories:

Notable OBD Losses:

Other: Respect Thread.  Also other such info.