Quote Originally Posted by joshnickerson
Hall of Fame records what team you used to defeat the Elite Four. And Gameshark probably won't do anything terrible to it... finding and capturing Missingno. (which was only possible on Red and Blue though) tends to mess up your Hall of Fame. But then again, who really bothers with that much anyway? *L*
It'd be a shame to irreversably mess up a saved game you put 100+ hours into.

The Missingno bug was in Yellow too, as I recall.