Whats the Biggest boss in WoW?

[Deleted]

Maybe Mister Yogg-saron..?

[Deviante]

hmmm maybe Kil'Jaeden? You can only see him from waist up and he's pretty big even then :/

[Syntic]

I'd say either:
Lich King heroic, after killing the entire raid in Frostmourne;
Supremus;
Gruul with many, many stacks

[Albert the fish]

model right now it is almost certainly supremus.
if kologarn or prince thunderaan were full models they might be larger, but they aren't full models so they are probably still smaller
ozumat or Neptulon might be bigger than supremus when cata drops, but neptulon isn't a boss per se

lorewise it's probably sargeras.
lorewise from bosses currently accesable(to include Cata bosses) it's probably C'thun or yogg-saron since we do not know how much of their body is still buried in the earth.yogg-saron is estimated to be roughly the size of the northrend continent,maybe a little smaller. c'thun is probably similar in bulk.

[Datachi]

Gruul, 30 growths.

http://www.youtube.com/watch?v=73hjs5t4BQ0

5:20

[Reluctant]

Archimond in mount hyjal is pritty big aswell

[Kralljin]

Thyrm
Iron Colossus(That Iron Giant that you kill with a Jormungar during a quest in the Storm Peaks)
Putridus the Ancient

http://img801.imageshack.us/f/ironcollosus.jpg/ (Screenshot from the Iron Colossus)

[Brutallus.]

Whale Shark.

yep

[Bobzor]

Hogger is big where it matters?

[Deleted]

Me to

erm lookup a pic of kologarn this dude pwns the little prince dude