Porygon not really "plastic"?

[Amewsment]

The existence of Metagross would disagree on that point because it's been explicitly stated that these are robots. They need to have been created at some point with the ability to replicate themselves even Hoyle's Boeing-story couldn't explain the fact that they are conscious etc.
Cases like Voltorb or Magnemite could be considered borderline as could most of the Steel pokémon out there. They can't be considered normal organisms either so in theory they need a background story to pertaining to their creation and exact biological set up.

I still don't really understand what Porygon actually is because it's not a hologram or a robot. It appears to be something in between and able to influence control over the state of it#s being, seemingly being able to switch from a virtual existence in cyber space to appearing here in the "real" world.

 

[Rappak]

How is Metagross a magnetic robot? None of the dexes say it and there's no references on the wiki. I wish that there was just to confirm it, but it does seem like it's organic as all the dexes talk about nervous systems and brains, things that wouldn't normally come with robots, maybe with androids, but highly unlikely.

 

[Blackjack Gabbiani]

What sucks is we're probably never gonna see it in the anime ever again, which is where they tend to flesh out the Pokemon beyond thier in-game Dex entries *sighs*

One of the mangas could always take that up. It's not banned in print.

 

[Amewsment]

The "teh" is on purpose xD

Beldum is a robotic lifeform that has a long body with a set of claws sticking out of its rear end.

Even though Beldum and its evolved forms are mechanical creatures, they still have emotions, the need to eat and a way of reproducing.

Metang is a robotic lifeform that has a disc-shaped body with a pair of appendages that resemble Beldum.

While not pure robots they do seem to be cyborgs of some shape or form. I know it doesn't actually state that their skin is made up of metal, but one must consider that they are of the steel type and their skin is pretty tough according to the pokédex entry: "Its body is so tough, even a crash with a jet plane won't leave a scratch".
I maintain the belief that they are a mix of robot and organism that was created in some research lab.

 

[$aturn¥oshi]

Those entries could have been put in by anyone. It was never officially stated that Beldum, etc. are robotic or mechanical. They are a form of living metal. A lot of Pokémon seem to have originated outside the planet (Deoxys, Lunatone and Solrock come to mind), so Beldum may be alien. This kind of makes sense since Steven Stone spends a lot of time in Meteor Falls. He had to get his first Beldum somewhere.

 

[Amewsment]

I will admit wiki isn't free or safe from rogue edits. I do however think that the information given is at least partially accurate, it baffles me why anyone would want to edit stuff like that in. We haven't been provided with that much material or that many facts about Metagross, so most of the discussion here is speculation. It could have come from out of space, but then again the first copies may have originated from a research lab. We shall never know for sure unless they publish some evidence in favour of either. That's why I hope they do some manga on Porygon and possibly some animé or manga for Metagross.

 

[Rappak]

I agree with that. Who really knows unless they provide more manga/anime about the two.

That also brings up the second point of, how do people really know this stuff to edit the Wiki? There's a lot of stuff on the Wiki that makes me question it. The Beldum to Metagross is one of them. Sources would be nice...