I think the version of Athena that Pan!Pyro worships is Athena Promachos or Athena Polias, both interpretations of Athena known as protectors of the city and her people.
I will definitely be doing more research on this, but from some quick sifting around, Athena Polias was a protector of the citizens of Athens and their civil liberties, and Athena Promachos was the protector of the city itself and a warrior who led the Athenians in battle (mirroring what drift(?) says about Pyro as him being a leader in strategy). Pyro repeatedly thanks Athena, calling everything she does a blessing, and that she has provided for and protected him.
I think once he’s been in the arena, his worship of her will switch slightly to Athena Promachos and Athena Soteira, Soteira being known as a healer and savior in times of crisis.
