My favorite artist in these is always 川本祐太郎 (Yutaro Kawamoto). Their artstyle and humor is so cute and charming (plus pretty easy to understand even with the language barrier)

The Luigi's Mansion manga confirms King Boo is using a Bowser Mecha Suit

There's another strip later in the manga where King Boo isn't ready for battle cause he's not done making the Bowser Suit

My scanner really struggles with the fold in the middle of the books so no matter how hard I press some of the images look kinda blurry and it's so frustrating?