Alsixnivis, Great Wyrm White Dragon Ascendant:
Gargantuan Dragon
Hit Dice: 48d12+480 (1056 hp [yes, its supposed to be maxed])
Initiative: +0
Speed: 70 ft. (14 squares) / burrow 40 ft. (8 squares) / swim 70 ft. (14 squares) / fly 270 ft. (54 squares) (manoeuvrability Poor)
Armor Class: 45 (–4 size, +0 Dex, +10 natural) touch 10, flat-footed 45
Space/Reach: 20 ft./15 ft. (20 ft. with bite)
Base Attack/Grapple: +48/+73
Attack: Bite +56 melee (4d6+13)
Full Attack: Bite +56 melee (4d6+13), 2 Claws +54 melee (2d8+6), 2 wings +54 melee (2d6+6), tail slap +54 melee (2d8+19)
Special Attacks: Breath Weapon, Crush, Freezing Fog, Awesome Aura, Rend, Snatch, Spell-Like Abilities, Spells, Tail Sweep
Special Qualities: Blindsense 60 ft, damage reduction 25/epic, darkvision 120 ft, icewalking, immunity to cold, magic sleep effects, paralysis, hostile transmutation effects, energy drain, ability drain, ability damage, and mind-affecting abilities, low-light vision, Fast Healing 3, Spell Resistance 33, Fire Resistance 20, vulnerability to fire +25% damage, Immortality
Saves: Fort +38, Ref +30, Will +34
Abilities: Str 37, Dex 10, Con 30, Int 20, Wis 19, Cha 18
Skills: Bluff +36, Concentration +42, Diplomacy +40, Hide +36, Intimidate +54, Knowledge [arcana] +38, Knowledge [nature] +26, Knowledge [religion] +56, Listen +52, Move Silently +48, Search +53, Sense Motive +14, Spellcraft +24, Spot +52, Swim +37, Survival +26
Feats: Draconic Knowledge, Fast Healing, Flyby Attack, Hover, Improved Manoeuvrability, Improved Speed, Iron Will, Lightning Reflexes, Maximise Breath, Multiattack, Power Attack, Recover Breath, Rend, Snatch, Suppress Weakness, Wingover
Environment: The Chambre of The Twelve
Organization: Unique
Challenge Rating: 33
Treasure: None (he ate it all--no, seriously!)
Alignment: Chaotic Evil
Awesome Aura: Alsixnivis has a 360-ft-radius aura that can either project fear (shakened normally or frightened if he attacks) on all enemies (excluding allies) who fail a DC 38 Wil lsave, or resolve, giving a +4 morale bonus to allies's attack rolls, saves, and skill checks, or awe, causing creatures who fail the DC 38 Will save to stare, dazed, at Alsixnivis in awe.
Breath Weapon: 60-ft cone, 12d6 cold DC 44 Reflex half
Rend: 4d8+19 extra damage
Crush: 20x20 area for 4d6+19 damage to Medium creatures, DC 44 Reflex save or be pinned
Snatch: works against Medium or smaller creatures, and can do a bite or claw attack each round
Tail Sweep: 30-ft diameter half-circle, Small or smaller opponents take 2d6+19 damage Reflex save 44 half
Spells: As 13th-level Sorcerer (I'll do this later)