yes
yes they realy can
Gravler has to be traded to evolve.
100
never
The first level you can atch Jigglypuff is route 3 in Chapter 2
you evolve golbat with friendship of the trainer
By the way it is scizor and it doesn't evolve
36
kakuna
16
at level 16
Haunter, Graveler, and Kadabra.