Darkmatter
Battle God
In general, if you think about it, they are probavbly a lot bigger then most people would precieve them to be. For instance, the average marine is maybe 6 Feet to 6'5 Feet, or so. I think anyways. Now, in-game, a Hydralisk is a bit taller then a Marine, so they are probably 8 to 9 feet tall respectively. A Goliath is taller then a Hydralisk, I'm assming 11 or so feet tall, given it's a pretty big machine to begin with. Archons look to be much larger then most units, besides the Ultralisk. I believe both are well over 18 feet tall, maybe the size of a two-story houser, or a little in-between that. A BattleCrusier, on average, is probably as big as....maybe a football field or two? Who knows.