The Fifth Element/WMG

The "fifth element" is actually Spiral Power.
The power of life, driven by love... able to overcome anything...

The movie is an adaptation decayed live action Care Bears movie
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This isn't the first time Mr. Shadow got defeated this way

 * Well it's supposed to happen every five thousand years.
 * The moon we all know just represents the only other time that we let Mr. Shadow get that close to destroying us. One would assume that evil that works on such a manageable time frame (every five millennia) would be relatively easy to repel. The other moons created by stopping Mr. Shadow were stopped too far out to reach orbit!
 * Indeed, all the materials were kept on Earth until fairly recently, and then the only reason there was such a time issue is because they ran into trouble on the way in.

That plastic...thingy on Zorg's head is a cybernetic implant
He's rich and I want to believe there has to be a reason for anyone to have that on their head.
 * No, that's just hair. Stupid, stupid hair.

The Mondoshawan are Starfish Aliens.
The Mondos wear protective suits, even when piloting their ships. Their actual form is completely inhuman, probably something unfit to any environment but their own homeworld. Maybe they really look like huge jellyfish or octopi. Their exosuits are actually the closest they can get to looking humanoid.

The Diva is actually not of an alien race, but is a genetically-engineered marketing gimmick for Listerine.
I mean, come on. Her blood looks just like the stuff.
 * Looked more like grape koolaid to me, very dark blue.

This film takes place in the stargate universe.
Seriously. The Egyptian stuff. The ships look like they could be using the same tech as the Promethius. The clothes of the soldiers does kind of look like that clothing worn by Quinn's folks.

The Mangalores were created to be warriors to fight on Earth.
This is why they are exceptionally good at disguising themselves as humans. They were meant to be able to infiltrate human armies and groups. However, they Turned Against Their Masters. This is why the airport on Earth has a machine that can detect them.