Board Thread:Spoilers!/@comment-24314171-20170922181716/@comment-25375217-20170922182322

Presumably, both characters will be included in a second Tiana flashback episode later in the season. Since Facilier is a more popular stand-alone character, they went ahead and announced him, but we won't hear about Naveen until he's cast.

It's worth noting, though, that this does not appear to be a direct Disney insert a la Frozen and Brave. They actually are taking some liberties with the plot -- like making Eudora a noble and putting them in the Enchanted Forest. So while some form of Naveen is mandatory -- someone's gotta be a frog -- he won't necessarily be just like Disney's version and may not even be named Naveen (although that's fairly likely since they consistently use Disney names even when it's not a direct Disney insert.