If he escapes I'm calling in Scarlet Nightdreamer. (A murmur of agreement comes from Scarlet, Alura and Angel.)
In all seriousness though, if he did escape I think pirates would have to have help from the wizards. After all, it was hard enough catching him in Wizard101. (After a chase through the streets of Marleybone you finally corner him on the 13th*?* floor of Big Ben. He still puts up a fight before giving in.) And that's with wizards. I'm not implying that Freeman isn't smart here, but I have a feeling that she alone wouldn't be able to outwit Meowiarty, much less beat him in a fight.
If this did happen though, I'd be pretty happy to see how it would resolve itself. Keep the good ideas coming KI!
If Meowarty escape from his dungeon cell this character will make things interesting. If he is a 2nd Arch boss,assuming Kane is the 1st Arch boss this will change the way our pirates adventuring the sky-ways forever.
On the flip side of the storyline he could be the Armada's ultimate boss,before challenging Kane this could get really sticky,either way Meowarty will be a boss to be reckon with, a very though boss in other words.