Favorite SMG or SMG2 boss

Bouldergeist, right?
Bouldergeist was THE boss. So damn hard, I wish more bosses of SMG(2) were like him. I alsol liked the frozen guy from SMG1.
The one in that machine on the top of some tower full of spikes?
Squizzard was strangley cool too.
lol the giant bee wasn't a boss