This is the first of a series I'm planning to do, where I reimagine all of the Stardroids from Mega Man V on the Gameboy. Mercury is a pretty simple boss, both here and in MM V. In MM V, all he does is shoot out a couple of Grab Busters, his signature weapon, then turns into a slime and basically dances around the arena, occasionally splitting into 3 smaller slimes, or turning back into his normal self and shoot out some more Grab Busters. Here, all he does is shoot out some Grab Busters, turn into a slime, bounce around the arena once, twice, or thrice, then turn back into a human and shoot out some more Grab Busters. If you're wondering why I got rid of the small slimes, it's because I'm not that good at coding bouncing enemies/projectiles. If you've seen my Fire Man Boss Recreation, you'll understand why.
Sprites made by Mister Mike on Spriter's Resource.