One time I cought a missingno. And over a period of a few weeks to slowly turned into a rhydon. It had rhydon's cry and looks but it wasnt in my pokedex. It happened to me again (with a different missingno.) but this time it turned into a Mew. Every level it grew it learned the same move ,thunder. it kept growing after level one hundred but it would start over at level zero after level 255. has something like this happened to any of you?