Give it the soothe bell, give it lots of berries that boost happiness (hondew, kelpsy, etc), lvling up, walking a lot with it, and challenging Elite 4 members and Gym Leaders all will boost a pokemon's happiness. If playing Diamond, Pearl, or Platinum you can give it messages at Veilstone and the Ribbon Syndicate.
for a medicham (hint: get a very high level medicham because the haunter will be the same level!)
well it easy really there two ways to level up Buneary you can put him in battle and level her up or you can find a rare candy that level up by one for one pokemon.
She has a Spiritomb, a Roserade, a Togekiss, a Lucario, a Milotic and a Garchomp just get Pokemon super-effective against them at about level 55 - 60 but keep in mind that Spiritomb doesn't have a weakness but don't worry because you can just use your strongest Pokemon's attack and take it its not too big a worry.
Briney's Peeko Is A Wingull..... a Fairly Easy Pokemon To obtain
There is no level, you have to trade him. What I did however is used a glitch, in which you these easy steps: 1- Deposit your kadabra in the GTS and ask for something impossible, I usually use a level 9 or under palkia/dialga. 2- Search for a Pokemon that is really easy to find, I use a bidoof or bibarel, then trade for it. (it doesn't have to be easy to find, its just that its easier to trade) 3- After trading take back your Kadabra, and voila! It should evolve after taking him out. There are other glitches that I use like the cloning glitch (search that one I can't explain it). The GTS is a great place for glitches.
Give them rare candies which increase a pokemons level by one.
you must be a very patient person :) THERE IS NO EASY WAY :(
How to increase the friendship of a Pokemon in Pokemon Black is very similar to do in other versions. These are all the choices that you can choose from. 1. Put the Pokemon in your party and walk around. (The really easy way) 2. Level it up (Just battling will not increase your friendship. You have to level it up) 3. Let it hold a Soothe Bell (Holding a Soothe Bell while walking or leveling will multiply that by two) 4. Give it Proteins and Vitamins 5. Give it friendship increasing berries (Not the best way to do it though) 6. Go to the Message Lady in Castelia City and give that Pokemon a daily message. Now these are things that can decrease Friendship. 1. Letting the Pokemon Faint 2. Giving your Pokemon EnergyPower, Heal Powder, Energy Root, or a Revival Herb. 3. Trading (Trading will reset all friendship to its base friendship) The friendship number for Pokemon to evolve is about 220. Although the Pokemon game will not give you the exact number. So go down to the Pokemon Fan Club in Icirrus City and have your Pokemon checked by the woman inside the building.
Here's what you do: You always walk around with the pokemon, put them in easy battles, always use them in battle, and never let them faint. With Pokemon friendship in all Pokemon games, you must treat the Pokemon well for it to improve. In Pokemon Diamond and Pearl: Put the Pokemon in the front of your party Give it heal items when it is unwell and other items such as Carbos and Iron Use berries that promote friendship, such as Pomeg, Kelpsy, Qualot, Hondew, Greppa or Tamato Berries Take the Pokemon for massages in Veilstone or in the Resort Area's Ribbon Syndicate Level up the Pokemon and involve it in lots of battles Don't let the Pokemon faint or lose Let it hold an item - any item, but to promote friendship use a Soothe Bell These methods are sure to increase your Pokemon's friendship with you. Use the Poke App 'Friendship Checker' to check how the Pokemon feels towards you.
There is an easy way to get your Pokemon to a certain level. All you need to do is collect rare candy and use it on the Pokemon you want to level. This will automatically level up your Pokemon.
Easy play well
You have to keep battling to increase your EXP. points or use Rare Candys
easy just cheat
charmander because hes easy to level
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!!
you can give them a lot of rare candies
keep battling Pokemon and people