I'm sorry, I really thought I could be a normal person about this, but literally every time I remember that the mario movie went out of its way to have Bowser say such a foreboding line as "we'll see how tough this Mario is when he watches me kill his brother!" and then simply REFUSED TO PAY THAT OFF when it really could have been a surprising and scary gut punch late in the movie to see Bowser attempt something there, even briefly, I become a little more deranged.