Name Any animal that Pokemon never did.

[Mutsukki]

Metagross is as much of a robot as Steelix is. Which is not really.

Genesect and Registeel are though. Totally. Although, technically, no pokemon are truly robots, since they're supposed to be natural/biological creatures, right?

Aren't they like weird data animals being that they can be stored in a computer etc?

See, these are the parts were the show is actually canon and help explain things better (even though this is kinda hinted at with Bill's teleportation device on Red/Blue). It's just that, you teleport Pokémon to your beloved professor, they're not IN the computer.