Say what you will about John Byrne as a person, but the man could draw some FANSERVICE back in the day!SAURON (Dr. Karl Lykos)
Roy Thomas & Neal AdamsFirst Appearance:
Uncanny X-Men #59-60 (Sept-Aug. 1969)Role:
Background Villain, Jekyll/Hyde GuyGroup Affiliations:
The Savage Land Mutates, The Brotherhood of Evil MutantsPL 10 (180)
Athletics 1 (+10)
Deception 4 (+4)
Expertise (Survival) 8 (+10)
Expertise (Science) 2 (+6)
Intimidation 10 (+10)
Perception 8 (+10)
Stealth 7 (+10)
Technology 2 (+6)
Treatment/Medicine 10 (+14)Advantages:
All-Out Attack, Chokehold, Close Attack 2, Damaging Escape, Daze (Intimidation), Defensive Roll, Diehard, Evasion, Fast Grab, Follow-Up Strike, Improved Critical (Natural Weapons) 2, Improved Grab, Improved Initiative 2, Improved Hold, Last Stand, Power Attack, Startle, Takedown, TrackingPowers:
"Wings" Flight 6 (speed: 120 mph) (Flaws: Winged) 
"Natural Weapons- Claws & Beak" Strength-Damage +1 
"Animal Senses" Senses 2 (Low-Light Vision, Scent) 
"Mutant Detection" Senses 3 (Detect Mutants, Ranged, Acute) 
"Life Drain" Weaken Stamina 10 Linked to Affliction 10 (Fort; Fatigued/Exhausted/Incapacitated) (Extras: Cumulative) (30) -- 
AE: "Hypnosis" Affliction 10 (Will; Entranced/Compelled/Controlled) (Extras: Area- Visual Perception, Cumulative) (30)Offense:
AE: "Fire Breath" Damage 10 (Extras: Area- 30ft. Cone) (Drawbacks: Diminished Range -1) (19)
AE: "Mimic Mutant Powers" Mimic 5 (Flaws: Touch Range -2, Limited to Drained Victims) (Quirk: Only Affects Mutants) (24)
Unarmed +10 (+9 Damage, DC 24)
Natural Weapons +10 (+10 Damage, DC 25)
Life Drain +10 (+10 Affliction & +10 Weaken, DC 20 & 20)
Hypnosis +10 Area (+10 Affliction, DC 20)
Fire Breath +10 Area (+10 Damage, DC 25)
Dodge +11 (DC 21), Parry +10 (DC 20), Toughness +8 (+9 D.Roll), Fortitude +12, Will +7Complications:
Motivation (Hunger)- Sauron is obsessed with draining the life forces of mutants to gain more power, and this frequently haunts even his alter ego.
Reputation (The Beast Within)- Karl Lykos is a doctor and a good man, but is twisted by his Hyde-like other self.
Weakness (Cold)- As a cold-blooded reptile, Sauron is especially vulnerable to cold temperatures.
Power Loss- If he has not drained the energy of a mutant in some time, Sauron will revert back to Karl Lykos, who has the Abilities: STR 0, STA 0, AGI 0.
Disabled (Mental Stats)- Sauron's mental faculties are extremely variable, and some forms of the creature appear no smarter than INT 0, and sometimes he appears as a snarling beast.Total:
Abilities: 68 / Skills: 54--27 / Advantages: 22 / Powers: 45 / Defenses: 18 (180)
-Sauron's one of the lesser recurring X-foes, with a weird place in their history- he hearkens back to the time when they were regular visitors to The Savage Land, in the Thomas/Adams years of the X-books. He's never really been used THAT much, but it seems that every single long-running arc on an X-book features a short return of this Jekyll/Hyde-type of guy. He mixes unoriginality (the Hyde thing, Lycanthropy) with uniqueness (a were-pteranodon who absorbs mutants?), and most of his plotlines are the same: the good Doctor Lykos gets tempted or twisted by his dark side (pretty much like Curt Connors always does- he NEVER stays cured for more than five years), absorbs a mutant, goes nuts, and then get stomped back down. See, as the X-Men got more varied and developed over the years, as opposers of racism and fighting society as much as super-villainy, a big generic "Drain and Conquer" kind of guy just gets left behind as a thematic villain.
-Sauron could be argued as being PL 11, since he was a frequent opponent of whole TEAMS of guys, but these days he's strictly a team player and hasn't been benefitted by too much Power Creep compared to many other X-Villains. He's an extreme threat thanks to his multiple expensive powers and ferocity more than any pure power levelling, and guys like Cannonball and Spider-Man can be expected to do okay, and even defeat him these days. He's been upgraded in versatility by Weapon X to include Fire Breath and Mimicry (folded into the Array because it's a minor power he's only showed a few times, so wasn't worth a giant 24-point separate chunk), adding to his already-powerful Mass Hypnosis and his lethal Life Drain power, which can Fatigue AND Weaken people. He's fast, a solid fighter, strong, has enhanced senses, can fly, and versatile- a dangerous foe, even if he doesn't break PL 10.