I hope I don't get spanked for this.
Male human Wizard 27; CR 27 medium-size humaniod; HD 27d4+108; hp 175; Init +8; Spd 30 ft; AC 28, touch 18, flat footed 25; AC with epic mage armor 48; touch 18, flat-footed 45; Atk +19/+14 melee (1d6+5 plus 1d6 fire, +5 staff of fiery power ) or +17/+12 ranged touch (by spell); AL N; SV Fort +16, Ref +15, Will +20; Stt 10, Dex 17, Con 18, Int 27, Wis 15, Cha 18.
Skills and Feats: Alchemey +38, Bluff +11, Concentration +31, Diplomacy +18, Knowledge (arcana) +38, Knowledge (the planes) +23, Knowlege (religion) +23, Scry +27, Sense Motive +9, Spell Craft +38, Scribe Scroll, Great Fortitude, Combat Casting, Bre potion, Improved Inititive, Lightning Reflexes, Quicken Spell, Heighten Spell, Craft Wonderous Item, Maximize SpellSpell Penetration, Craft Staff, Improved Spell Capacity (10th), Improved Spell Capacity (11th), Improved Spell Capacity (12th), Improved Metamagic, Epic Spell Casting, Epic Spell Preperation.
Wizard Spells Per day: 4/6/6/12/6/5/5/5/5/4/1/1/1; Base DC 18+spell level.
Spell Book: Mordenkainen Knows hundreds of spells, many of which he has researched himself (and have some come into other worlds.) He knows all the wizard/sorcerer spells in the players Handbook. As new spells are researched by other mages and come into circulation, Mordenkainen is not slow to discover and pen then into his own vast library of spell books.
Epic Spells per Day: 3
Epic Spells Known: epic mage armor, greater spell resistance, let go of me, ruin.
Possessions: +5 staff of fiery power, bracers of armor +8, rod of absorption, pink Ioun stone, carpet of flying, (6 ft. by 9 ft.) amulet of natural armor +2, wand of fireball (10th level caster), ring of protection +5, ring of wizardry III, crystal ball, silver key of portals.
For any more info, get the book.