vecna 
 Meet D&D's Dr. Doom

 

Name: Vecna, The Maimed God, The Whispered One, Master of all that is Secret
Origin:  Greyhawk [D&D]
Gender: Male
Classification: Archlich, God of secrets
Age: Centuries old
Powers and Abilities: Superhuman physical traits, immortality (type 7), can reform after being destroyed, paralyzing touch, lifeforce manipulation, mastery of arcane magic allowing for many abilities such as teleportationenergy projection/barriers, astral projection, illusions, invisibilitytelekinesistransmutationmind manipulationelemental manipulationsummoningsoul manipulationtime manipulation (can stop or rewind time), reality warping, instant death magic, cannot be frightened, charmed or poisoned, immune to non-magical physical damage, resistant to cold and electrical damage | Greatly increased physical attributes, immortality (type 4), immune to conventional mind manipulation, can command demons, immune to life-force draining, acid, cold or electrical damage, also immune to mind-manipulation and transmutation | Immune to imprisonment or BFR (by non-divine means), highly resistant to fire and magic. also possess clarvoyance, spatial manipulation, regeneration (mid-low), telepathy, shapeshifting, divination, enhanced senses and can undersatnd and speak all languages | Same as before, but to a lower degree
Weaknesses: Could only be permenantly destroyed if his phylactery is destroyed or he does not feed it souls, can be eventually tapped out of spells, magical weapons can harm him | Was still susceptible to extra-dimensional imprisonment, also he could not use his divine powers against people wielding his relics (those being his former hand and eye, etc.)
Destructive Capacity: At least City level+, likely Country level or higher (was the most powerful mortal mage on Oerth) | Continent level+ | Universe level At least Planet level+, likely higher
Range: Several dozens of meters with magic, universal with teleportation, can travel between dimensions as well | At least planetary | Multiversal 
Speed: Massively Hypersonic combat/reaction speed when amped with magic | Massively Hypersonic+ | Much higher, at least FTL+ (comparable beings are capable of inter-stellar travel)
Durability: At least City level with magic augmentation/barriers, likely Country level | Country level+ | Universe level | At least Planet level+
Lifting Strength: Superhuman | Superhuman to an unknown degree
Striking Strength: 
Superhuman to an unknown degree
Stamina: Nigh-infinite due to undead nature | Godly
Standard Equipment: Spellbook, likely carries many scrolls and other magic items as well | His magical dagger Afterthought
Intelligence: Super Genius, quite possibly the smartest mortal to ever live on Oerth, mastered the arcane arts like no one before or after, ascended to godhood and hatched plots to become the supreme ruler of the multiverse, nearly succeeding. Still managed to come back after the multiversal re-arrangement more powerful then he originally was.
Notable Attacks/Techniques: 

Magic: Vecna was the most powerful mage to ever like in the Greyhawk setting. As a deity he possess incredible amounts of magical power unfathomable by mortals (the dude can cast level 16 spells, ok?)

Necromancy: vecna is first and foremost, a necromancer. Even prior to his ascention he was a powerful Archlich and could manipulate the life-force of the living and the dead without the use of his spells. His powers are especially potent within his lair.

Paralyzing Touch: as a lich, Vecna can paralyze anyone he touches, while also dealing cold damage in teh proccess.

- Frightful Gaze: as mind effect, vecna can induce fear in someone he looks at.

Rejuvenationi: Vecna's souls lies in his phylactery, and he can only truely be destroyed by getting rid of it. As a deity he is much harder to destroy and was able to survive and return times and again, even after multiverse altering events.

Notable OBD Victories: 

Notable OBD Losses: 

Other: 

Key: Lich | Demigod | Greater God (briefly) | Lesser God (3rd edition and onwards)