I'm getting a Dota 2 feeling for some of the characters we dispatch. Malevola gave me Queen of Pain vibes right away, then I realized Coupé is pretty much Phantom Assassin: fan of knives, COUP de Grace her ult which is a low probability critical chance, Coupé incidentally likes gambling. French related because of the Coup keyword. Her design with the metal wings reminds me of the Warden model in Warcraft 3 too.
Sonar? Nightstalker. Even has the transformation where he gets more combat oriented. Whoever designed and conceptualized these characters was a Dotard for sure.