Turbulence
I highly respect the amount of effort that was put into drawing each unique character in this single panel comic, especially in the day of copy-pasting heads in every panel, in a normal web comic fashion.
Cow
Cow, slice of pie, aliens, pig, invisible man, skeleton
Random eyeball. Fish tail. Foot in the overhead bin.
pig
Pig wearing a fez. It's important to recognize his achievement in getting membership to the club.
You have to love Pirarro.