I loved it!!! I loved your drawing style as always, the lil background elements and characters (both in their designs and what they did) were my favourite part. Some examples I loved were the i c u p in the tree, the lil rat cushion, the store manager's design or the cutesy birds eating some worms.
I also love how vibrant everything looks, and it surprised me, knowing that it's just some screentones and black ink, but you really made the characters stand out from the background and the backgrounds feel alive.
If I had one criticism it would be that maybe in trying to make Agent talk like one of them 1940s comic book narrators he turned out a bit too robotic and descriptive in his dialogue, so maybe go all in to the superhero narrator style and make him shout every special move he makes or all in on the robotic side. It would also be fun if to exemplify his personality in speech you changed the font he speaks in.
But anyways that's the only thing I would improve, as the simple goofy plot and the personality in each panel made this super enjoyable, sign me in for more modtown comix!