Max may just be a placeholder or behind the scenes character, much like the We're Alive version of a Red Shirt. Has it's uses but ultimately no relevance to the main plot.

I want to hear more about the Baseball cards banter. Puck is obviously a Geek of sorts especially as he clearly seems to be able to estimate the value of certain types of card.... next episode.. Saul vs Puck in a Pokemón Battle Royale!. Saul's Peeked-atchoo vs Puck's Vulvix