Welcome to Gaia! ::

what are the bosses?
theres like
the big fat gnome commander
and uhm, dead mans a** [yesh a** not pass]
i forget the others XD
whats ur favorite boss?
i likey papa saw >:3

she wolf!
how can you not like the zipper mouth?!

so...

the mumbler [non-instanced] [sewers]
alpha gram [non-instanced] [sewers]
general mayhem [non-instanced] [village greens]
OMGWTF [instanced] [bills ranch]
gilroy [non-instanced] [bills ranch]
cuckoo [non-instanced] [bills ranch]
katsumi's doll [instanced] [zens garden]
shewolf [instanced] [bass'ken lake]
sister saw [non-instanced] [bass'ken lake]
papa saw + mama saw [instanced] [bass'ken lake]
preda-commander [non-instanced] [old aqueduct]
landstrider [non-instanced] [old aqueduct]
duneslam [instanced] [gold beach]
endboss(sealab-x) [instanced] [gold beach]
queen lorelei [instanced] [gold beach]
land shark [non-instanced] [gold beach]
stone coatl [instanced] [otami ruins]

the bold ones just mean there rare spawns.
that i believe is all the bosses. and the italic is retired boss...
i believe the mumber is retired...though its possible since the release of mini-events, the strider could be no more. but before the event, you can see all about the creature..http://www.youtube.com/watch?v=tA67gRdIjqk
there.

land shark... candygram?

My fave is Papa Saw >.< I dont really like some of the bosses