All additions:

King Goomba/Waluigi:

- King Goomba will now get angry when Waluigi defeats a certain number of his army. His arsenal and power will increase as well.

- Waluigi has been given a smoother jump in his dodge state as well as a smooth punch animation during his punch move.

- During phase 2, a tanoomba (the tanooki goomba that shows up from the left of the screen) will sneak in and try to tail whip Waluigi. There will be more additions in the future.

Popple:

- Popple will now take out a hammer and try to hit Wario with it as a new attack.

King K. Rool/Donkey Kong:

- K Rool has some new additions to his kit. As one of his new moves, he will charge towards DK and try to punch him. It's not that simple though. If you duck before he reaches you, he will know you'll dodge his punch, so he stomps the ground and makes DK dizzy so his punch will be inevitable. When he reaches you, he will sometimes delay his punch to trick you.

- K Rool also has another new move. He'll stomp the ground and cannonballs will shoot towards DK. You need to full hop and duck to dodge them.

- DK now has a unique theme and animation when he is defeated.

Bowser:

- Bowser's animations have been increased to be more accurate to his original appearance in Bowser's inside story (He still looks like trash though).

- His new attack has been long overdue, and now it's here! He will take a deep breath and if timed correctly, he'll shoot fire at the enemy. If he charges for too long, he'll cough and the attack won't connect.