There are only 2 new characters on the disc, Blilly, Saiki, more 3 DLC character Ex iori, two still unknown.
So a total of 5 new characters into the game.
RSG/Atlus/Snkp had just a bad communication about that (And people want always new char make it spreading again and again).
Frionel is saying it, so if it's not true i'm going to rape him with Billy pole if he lied