AVClub: Groot is a mystery. The only person who understands him is Rocket, as both a translator and a friend to the overgrown tree, but he never understood Groot’s true nature. It would have been easy to keep Groot as a hulking beast who main function is being woodenly charming and ridiculously powerful. But “Can’t Fight This Seedling” gives Groot a clear, long-term goal, and the episode utilizes a bit of subtlety to explore that. With that kind of narrative focus, along with establishing clearer dynamics and character roles (as well as a slight improvement in the animation), Guardians of the Galaxy may have found its footing. The dynamics aren’t deep, but they’re grounded, with just the right amount of comic shade that gives the characters some verve. I’m cautiously optimistic.