Technically, I believe the female would be a Slugga.
If she truly exists, Mr. Sterling, then you must find her…you must!
If Sluggo were in a science fiction tale, her name would be Slugga or Sluggia. It’s a law that 95% of all sci-fi women must have names ending in “a” or “ia.”
I believe it might be a Sluggalette.
Slugella would also be a possibility, to use the Groo/Grooella model.