Imagine the next Luigi's mansion brings back bosses from previous games.


Koopa Troopa
It would somewhat be like a Kirby situation where they would have similar attacks but more expanded upon. A good example would be King Mcfrights, in 3 he would charge at you when in his suit of armor and shoot arrows at you and once broken, he would try to hit you with his sword while spinning at you. Now imagine that but his sword covers more of the arena and instead of shooting arrows at you, he would shoot thunder and shockwaves through his sword. another one would be Dr. Potter with his plant. He could maybe create some kind of giant Fly trap that you defeat by using the buzzsaw to cut its vines but while trying to due so, he use try to grab you with his one his heads similar to his first fight.