Devil D is a known issue. It’s because he’s depressed that Moon Boy isn’t in the game.
I had the “one point away from leveling” thing too, on every character that could be leveled. And they’re all at the levels I had them at before, too, so it’s basically a free level. Is that… supposed to be?
To compensate for the unintentional extra ISO applied to non maxed chars, they are going to give out a standard token and reduce your entire roster two levels.