You have the obvious talent/skill for this. It's a good clean animation with proper sound quality and good voice acting. Nothing's overdone, but it achieves everything intended for what it is... It seems somewhat either incomplete or rushed, so you might go to the end and work out something for a better finish...
Actually (originally) a homunculus comes from the Latin of Rome being the diminutive (suffix -ulus) of hommus (meaning "man")... It was legendarily meant to reference a "little man" that was supposedly produced when criminals were executed, since bodily fluids were often released (yes, even those fluids) at executions... Some would suggest it could only happen at certain phases of the moon or for other "spiritual" or "metaphysical" reasons, but supposedly the thing was always demonic and generally bad news... -Please duly note here, I'm only pointing this out as the original story of the thing because so many think the later cartoon varieties are original, and sadly too few don't really know just how sick, gross, and screwed up our ancestral stories really got... ;)
As for Spaceballs, try any DVD player or some rental service over the net... Surely Mel Brooks isn't forgotten already...

Like the egg and the loose reference to Alien... as much as Spaceballs, so you could run either way on this one... It's still funny, just more of a light giggle than a full laugh...