Bowsette:

Booette:

Chompette:

Piranha Plant Queen:

Queen Goombette:

Bullet Billette:

Banzai Billette:
(In this story they'll be mechanical beings Bowsette created to man her artillery.)

Queen Bob-omb:

Queen Thwompette:

Rosy the Shy Gal:

Fawfulette:

Kammy the Magikoopa:

Lakituette:

Penny the Mad Piano:

Melody Pianissima:

Harriet Broodal:

Waria:

Walouis:

Koopa Girl (Her name is Shelly):

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Here's your Harem of the Villain girls in Mario.