Doers that mean that some one comes out of the stage wings Hollering "make up!" and clobber you in the face with pancake(?)bag? You young'uns will not understand that reference to very popular comedy show from the 50's and 60's.
As for titles how about "diver, crazy diver, crazy technical diver", etc.?
How 'bout
Large Banana Hamock
Sir O of Kay
Chicken of the Sea
Lower end Bubble Maker
Is that a breathing gas?
Trimix-a-lot (for the diving rapper)
Bottom Feeder
The Farmer (for the diver that is always kicking the muck)
AquaNut
AquaNut sounds a good one to me....
Lottie
No they are two...