Beholder 21
Gelatinous Cube 17 Mind Flayer/Illithid 18 + 1 = 19 Unlike the floating eyeballs, these come up with a PLAN for a living.
Owlbear 9 Purple Worm 3 - 2 = 1 A worm from Dune would be "iconic"
Rust Monster 11
Beholder 21
Gelatinous Cube 17
Mind Flayer/Illithid 19 Owlbear 10 Surely this is the wisest of bears Purple Worm 0 Sorry, but I'm with Eltab on this one.
Rust Monster 11
Beholder 22 Gelatinous Cube 17+1=18
Mind Flayer/Illithid 17
Owlbear 10 Rust Monster 11-2=9 My paladin hates you, and what your kind have done to our wonderful equipment!