According to James Gunn, Maria Bakalova was cast for the role of Princess Rostovic specifically because she speaks Bulgarian, which is what Gunn had in mind for the character.
Maria, I wrote for. She was the first person ever cast in the DCU.
So, I texted her because she speaks Bulgarian and we needed to have
Princess Rostovic, and we needed to hire everybody from that country,
and they needed to speak the same language, and we needed that to be
what Maria spoke.
James Gunn Reveals the Surprising Actor Who He Cast First In the New DCU
Other voice actors (including Julian Kostov) have confirmed that the lines are in Bulgarian.
Mom, dad… I’m in the @dcofficial universe! watch
@mariabakalovaofficial and I in CreatureCommandos on @streamonmax. We
voice most all citizens of Pokolistan who happen to speak Bulgarian
language!
I've found multiple tweets from Bulgarians who are excited about hearing Bulgarian spoken in the show.
The story unfolds within the familiar DCEU universe, with the timeline set shortly after the events of "The Suicide Squad 2." This time, Amanda Waller assembles a team of monsters and sends them on a mission to... Bulgaria!
Well, not exactly Bulgaria, but a fictional country where the princess
is voiced by @mariabakalovaofficial, and everyone speaks Bulgarian
(there’s something special about hearing your native language!).
