reserving for Zosodojo777. editting in a min
EDIT: OK, you get a Wurmple. As a wurmple it dreams big, and tries to reach its dreams of evolution quickly, so you must stop everything and train it to lv 7, where it must evolve. But when it evolves, it finds itself confined and does not like its shell; however, it does learn patience, and will wait for the rest of the team to catch up. It will not, however, let itself be 2 lvs lower than the highest lv pokemon in your party. Once it evolves, the challenge depends on whether it's a Beautifly or a Dustox. As a Beautifly, it is obsesed with itself, and makes sure it knows at least two moves that show off its beauty. Also, it must know either a third beauty move, or Attract. The final moveset is up to you. It still refuses to fall behind anyone else by more than two levels, thinking that the lack of power will take away from itself. If it is a Dustox, however, it is much more battle minded, and must know three attacking moves. It can't stand beautifly because of their flaunting, and must solo all Silcoon/Beautifly. When it reaches lv 20 that hatred has grown out of control, and it must solo all bug types. When it reaches lv 35, it finally settles down and no longer holds this hate, therefore you don't have to solo bug types anymore. Also it now holds an undying respect for you and your patience, therefore it wants to serve you as best it can and learns return. Now to prove itself to you it must solo the 8th gym leader and five Elite four pokemon. Once again, the competitive spirit has not died and it still must be within 2 levels of your highest pokemon. Nicknames are optional.
Recap:
-Catch a Wurmple
-stop LVing everything else and level it up to lv 7
-let it evolve
-As Cascoon/Silcoon, you must continue to train, but you can train your other pokemon too
{-As Beautifly, it must know 2 Beauty moves ASAP, and must learn a third beauty move or attract ASAP
{-It still must stay within two levels
[-As Dustox, it must have at least 3 attacking moves ASAP
[-It must solo all Beautifly/Silcoon
[-At level 20-35 it must solo ALL Bug types
[-At lv 35 you must teach it Return(Pacifiglog town) and it doesn't need to solo bug types anymore
[-It now must solo the Ice type leader and 5 pokemon from the E4
[-Still has to stay within 2 levels of your highest
hope that's clear enough.