Hatchling

I wish there was an alternate timeline where the baby metroid survived at the end of Super Metroid. The moment the metroid hatched in front of me, I was in love with it. Normally they are terrifying, but this little one was just...so small and so cute. 

At the least, I'd like to see a Samus-only item spawn in the next Smash Bros game where the baby metroid comes in and eats an enemy into dust.