Isn't Registeel technically a robit? And Genesect etc.
Unless you mean like robot transformations of pre-existing mons, like Mechachu or something, that'd be rad.
Yes, it's known as Berketshire, as it appears in issue #74 of the Mario-kun Manga. Every Wario fan knows this, and frankly you should be ashamed to even ask this question.
I was looking up at the stars a few minutes ago and I was thinking to myself, "why are they shimmering weirdly like that...?" Then I realized that this action is referred to as 'twinkling', as is exemplified in the familiar children's nursery rhyme.