it's a bit hard to get pokemon up to level 100 if you can't cheat nor leveling up.
wifi events pokemon are usually lvl. 100
you train them
by leveling up to level 78
on 139 is Omastar, gotten by leveling up Omanyte to level 40
it evolves with a fire stone not by leveling up
Cubchoo evolves into Beartic by leveling up to level 37.
You cannot. Whatever you can do in the game naturally (i.e. leveling up normally, by battling and using the rare candies available) is all that you can do to level up. The only methods to level up faster involve cheats.
you train them
a easier way of leveling up is below! Pokemon level 1-30 find a level 50 Pokemon Pokemon level 31-100 find a level 100 Pokemon Pokemon level 101-200 fight a level 200 Pokemon Pokemon level 201-300 fight a level 300 Pokemon and so on... WARNING YOU MUST DO THIS ON VERY EASY!!
train in wild Pokemon battles through out the game
what does that mean it means your mother. How do you get staraptor on Pokemon diamond without cheats is the proper way. Catch a Starly, level it up to evolve into Staravia, then level it up until it evolves into staraptor.
but only without AR no cheats!
you must be a very patient person :) THERE IS NO EASY WAY :(
Train or use the VS seeker.
unless its level 100, it will try to level up by default. if you hit enough steps while it's in daycare it will level up
By leveling to to level 26.
by leveling up to level 78
you just have to keep leveling up your pokemon. Try different areas that fit your pokemon's level. Hoped this helped!!