No, they do not transform into robots. Instead:

These are Toronto’s residential substations, fake houses built by Toronto Hydro to conceal what’s inside: a transformer that converts raw, high voltage electricity to a voltage low enough to distribute throughout the city.

I have seen a number of them over the years, including this one, which is not far from me: Fake Toronto castle hides electrifying secret in plain sight

They are rather cool, I think. And the fact they blend into the neighborhoods is a huge plus.

For more on them, including the one shown above, see this: Toronto Hydro’s not-so-hidden residential substations.