Considering Doopliss is a repeated boss, that makes sense. But yeah when you think about transformations are no big deal in this series and are always temporary/ easily reversible.
Then again the same goes for "death" or what often seems like death. Bowser has "died" many times and found a way back from the dead. It has also been shown that Bowser in Dry Bones form is reversible, making it possible that all Dry Bones are able to become ordinary Koopas again.
It seems you have to do quite a bit to permanently kill someone in Mario's world, and even then they can always come back as a ghost.
This sort of puts a damper on the "Mario's a cold-blooded murdered" argument.
Then again the same goes for "death" or what often seems like death. Bowser has "died" many times and found a way back from the dead. It has also been shown that Bowser in Dry Bones form is reversible, making it possible that all Dry Bones are able to become ordinary Koopas again.
It seems you have to do quite a bit to permanently kill someone in Mario's world, and even then they can always come back as a ghost.
This sort of puts a damper on the "Mario's a cold-blooded murdered" argument.