Sera was designed after Trevor from GTA V.
I'm far from a big Trevor's fan, but it seems he is easily the gamers' favorite character.
Even for a game like GTA, I thought Trevor or completely out of place. He was over. Most of his missions had bad tastes or didn't made sense at all (someone is covered in his own sh*t, later he will appear naked sleeping on the bridge, next mission he will appear sh*ting...95% of the time he is yelling and/or saying he will kill someone.
For me its clear he was designed to be some kind of Trevor of Thedas.