Every banner in this game is some sort of limited seasonal banner. If you miss a character you have almost no chance of getting them for a long time. Whats worse is that theres a game activity (the bird) which is only doable w/ specific characters and if you missed them you are screwed. There is also a costume system which gives stats and if you didn't get costumes for certain char you can't buy them anymore and they become useless (eg.Summer Merlin). NotF2P friendly not even dolphin friendly.