Diddy Kong

Mario Games he's been in:
None. Not one Mario game.

Mario Games he's had a major role in the story:
Again, not one game. We need a good Mario/DK crossover.

Non-Mario Games he's been in:
OK, here we go. Because Diddy was introduced as a DK character, only DK games he has been in so far.
Mario Games he HASN'T BEEN IN:
See Donkey Kong

Forgotten Heroism:
Why People Like Diddy Kong: