A 48x48 boss which moves between the left and right edges of the screen. It can shoot bullets and it will get faster after each hit. By default, it takes 5 hits to kill it. It can display its HP on the status bar.
Check the ASM file for customization options.
Give credit to me.
Tester's Note: Sprite palette 4 (also included as a palette file) gives Morton his correct colors. The boss is very easy to defeat by itself.