Arrow keys to move. Z to jump, and X to shoot the boss, and C to dash, V to use an EX attack, dealing more damage when you have a red rectangle near your HP. If you have 5 EX cards, you can use a super attack, a singular, more damaging attack. Shoot the Green Pico in the 3rd phase to raise him up.
Thanks to @PizzaGut for the inspiration and MDHR Studios for Cuphead for more inspiration! flaming text.com for the thumbnail text. I got the Green Pico from my friend Caleb, who said it would be a good idea. It's also inspired by Mr. Chimes from Cuphead, and Bunzo the Bunny from Poppy Playtime Chapter 2. This project took me so long to make it has over 1.3k blocks. Neon Mixtape Tour music from Plants vs. Zombies 2.