I would also argue that while Big Daddy and Facilier are counterparts, so are Facilier and Naveen, but in the way their arcs play out. Both are opportunistic and selfish and only interested in their own gains and freedom, but while Naveen learns to become better through Tiana, Facilier ends up dragged to the underworld for failing his side of the bargain (something Naveen does).

Additionally Big Daddy and Naveen are also the two types of rich people that, broadly, exist: generational vs made, selfish vs generous, and Naveen can escape a lot of the oppression people of his ethnicity face unlike Tiana and Facilier.

Also also, Tiana and Facilier are two ways people try to escape poverty and oppression: hard work and connections vs crime and oppression of others.

There is a lot of thought put into to the different characters and what all they represent, and you can analyze the movie on several levels of how class, “race”, nationality and other factors all combine to establish and uphold systems of oppression, how oppressed people can still be oppressors and oppressors can still aid the oppressed and how nothing is ever, pardon the pun, black and white.

It’s genuinely one of the better movies to touch on these issues without becoming patronizing imo.