How did this person get more characters than this tool lets me add?
Also, my CSS gets a bit screwy when I use this tool, but his is perfectly clean and fine?
What? How?
He added all entries and then added portaits. Niot hard though NONE of those extra ones will never work due to how the game is coded. The closest thing you may able to do is either one use gecko codes and find the right value, or two swap animations with bosses and such although you will iimit yourself with the amount the character has.