What game have they not been in #1

This is mainly about 15 video game characters that all have one thing in common: They all have appeared in multiple game franchises outside of their own. So the goal of this is to figure out which one they have not been in. Around question 10 is when things get a bit weird and more difficult Note: Being in will be defined as appearing in one of the games in the series. Even if the game series only has one entry Bonus: The Last Question is a trick. Be careful