Peter Rogers’s review published on Letterboxd:
An absolute dark horse from 2011. It's not a masterpiece, but it's surprisingly unique in its concept.
Other than that, it follows the standard 'lone wolf' cliches, the father/son cliches and underdog boxing cliches. Yet, I still love every second of it.
It's just so fun to watch gigantic rock-em-sock-em robots knock each other to pieces, and I like the ambiguity of Atom's self-awareness.
A bit of a gem, and fun for a lazy re-watch.