Head empty, only thinking about Ultra Protective Big Brother Mario at all times and how ever since he was a literal baby who just learned to walk, his first, strongest instinct, as unthinking and instantaneous as a reflex, as breathing, has been to position himself in between Luigi and the slightest hint of danger with absolutely ZERO hesitation
(Their expressions are EXACTLY the same in the 1st and 3rd image!!!! Some things never change!!!! LOOK HOW HARD I CAN CRY!!!!!)
Title says it all. Illumination are cowards by not playing more with the bowuigi material that the trailers showed. All jokes aside, This scene in the movie with Bowser was so cute!