When The Tick is patrolling the city and crashes through the roof of a building with his feet, we see 2 people sitting on a couch. They're played by creator Ben Edlund and producer/director Barry Sonnenfeld.
The show creators couldn't secure the rights to use characters Die Fledermaus and American Maid, so they re-imagined/renamed them Batmanuel (an obvious nod to DC's Batman) and Captain Liberty (nodding to Marvel's Captain Marvel and Captain America characters.)
When Arthur enters his apartment you can briefly see a Stater Brothers logo on the paper bag he is carrying. Since Stater Brothers is a small grocery company only located in Southern California and Arthur turns the bag away from the camera when he sets it down, it is unlikely this was product placement.