It mostly depends on what you define as "robotic".
Klinklang and Magnezone supposedly are a byproduct of human activity in the same way stuff like Grimer is. However, no one knows what exactly gives them sentience.
If Bulbapedo is right about saying Beldum is based on dumbbells, then Metagross forms part of this too. Otherwise I don't know what the fuck it's supposed to be.
Golurk and the Regis are golems: basically, magic robots. They're unlikely to have any mechanical components.
Magearna is a clockwork automaton. Nothing too high tech, but it's still a robot.
Porygon is some sort of sentient program that somehow is able to manifest itself in the real world.
Genesect is a cyborg, so not a robot even if it looks like one.
Tl;Dr - there ARE robot Pokémon, just not the futuristic kids you usually see in movies.
The closest thing we have to that is F-00 and it's not even a Pokémon.
GF pls ;_;
