This is funny, because I was actually trying to work out a way to make an interesting "super-solo" encounter, pitting two 5-man parties against a single, massive foe.
Not inspired by WoW at all (though I do play it), it's actually inspired by the fights in One Piece with Oars and Pacifista #1. Perhaps I should fork it.
back at gen con last year I did just that, a 10 person solo monster. I cheated though...I took a red dragon and added a template, then took a few minor action and intrupt powers and added that...then added about 250hp.
and it was a cool fight...let me see if I still have the stats...
edit: got um
[sblock]The LAST Dragon Level 33 solo Brute
Gargantuan natural magical beast (dragon) XP 155,000
Initiative +21 Senses Perception +24; darkvision
Aura of Death (Necrotic) aura 3; enemies that enter or start their turns in the aura take 10 necrotic damage (20 necrotic damage while the last dragon is bloodied).
HP 1600; Bloodied 800; see also bloodied breath
AC 45; Fortitude 46, Reflex 44, Will 46
Resist 25 all
Saving Throws +5
Speed 10, fly 15, overland flight 20
Action Points 2
Bite (standard; at-will)
Reach 4; +41 vs. AC; 4d8+10
Claw (standard; at-will)
Reach 3; +41 vs. AC 2d8+10
Draconic Fury (standard; at-will)
The dragon makes a Bite attack and Two claw attacks.
Breath Weapon (standard; recharge 5 6 ) ✦ Entropic
Close Blast 12 +39 vs. Fort, Reflex, & Will 1 attack roll
If Fort hits Lose 2 healing surges miss lose 1
If Ref hits 6d12+ 9 disintegrating damage. Ongoing 15 save ends…after effect ongoing 10 save ends…after effect ongoing 5 save ends. miss ½ damage and only ongoing 5 save ends
If Will hits Dazed and weaken save ends both if first save fails upgrade to Stunned and weaken save ends. Miss weaken save ends
If all three hit one target, the target takes -2 all saves until end of encounter
Bloodied Breath (free, when first bloodied; encounter) ✦Entropic
The dragon’s breath weapon recharges, and the dragon uses it immediately.
Abyssal Surge (Immediate interrupt; at will) ✦ Necrotic
When ever anyone moves into a flank. Close Burst 2 (enemies only) +36 vs. Reflex 5D10+4 Necrotic damage and targets grant combat advantage to the dragon (save ends)
Dark Dragon Curse
When an Abyssal Dragon hits with a bite and both claws on the same target they receive the Curse. Any Attack from The last Dragon gains +3D8 damage until the end of the encounter. Also Any Saves the cursed creature makes against the Dragons ongoing effects take a -2.
Threatening Reach
The Abyssal Dragon can make opportunity attacks against all enemies
within its reach (3 squares).
Alignment Evil Languages Common, Draconic
Skills Endurance +17, Intimidate +17
Str 28 (+25) Dex 20 (+21) Wis 26 (+24)
Con 30 (+26)Int 31 (+26) Cha 33 (+27)
[/sblock]