Yves Bigerel (Balak), Art Director at Bobbypills animation studio and on the show is also voicing Bullfrog, the frog assassin. He was the one recording all the placeholder voices on the working version of the episodes (animatic). He came up with this very strong French accent first as a joke. Adi Shankar loved his acting so much producers decided to keep him as voice actor for the character.
It contains many Ubisoft characters.