I was talking to a friend about this, and he and I both agree that Askai, when he was first released was way to powerful from the get go. Sure he has his weaknesses, but his pros are too damn good.
What other cards to you consider broken/imbalanced?
Only un-CR'd card that could be considered OP is Grax, but out of all broken cards Grax is least OP so it is borderline case.
From fresh releases only nearly broken character is Beeboy. But that is mostly because of the cards that usually accompany him, not from him being Beeboy as singular card.