So, I didn't level up [REDACTED] to level 99. As much fun as [REDACTED] is, the fact that you can't put any core, equipement, or even level up his arts mean that, I would have to grind endlessy on boss of level 99. Which become tiring after awhile.
Really, I hope that, if they ever decide to make [REDACTED] as a full character in a futur DLC, I hope he has much more option than he have now. And that he keep, his topple/launch/smash move, because that move is just too good to pass on.
I did level him up to level 70 though, and I used the exp bonus I got to get some cool stuff out of it, so, I did get something in the end.