One thing I noticed about this new design. Is how casually Mona Lisa is dressed. Its as if she's not bothered that she's a mutant lizard.
She's probably someone who sees herself looking cool due to the mutation.
Some people aren't comfortable with there looks. But there mutation happens. And they see themselves looking cool and bad ass.
Look at Bebop and Rocksteady. They are cool with being mutants. Because to them. They feel stronger and see themselves as a pair of bad asses.
__________________
|