Cheren

Cheren is one of two friends/rivals the main character has in Pokemon Black and White. All three of them reside in Nuvema Town. He is the rival that picks the Pokémon that has a type advantage against yours.

In the Manga
Unlike in the game, his starter is weaker compared to the main character.

In the Game
Cheren is also a very intelligent boy. His starter will always have an advantage over you and he will very often challenge you to battles.

Pokémon

 * Pansage, Pansear, or Panpour
 * Purrloin
 * Oshawott (If picked Tepig as a starter)
 * Snivy (If picked Oshawott as a starter)
 * Tepig (If picked Snivy as a starter)
 * Pidove
 * Haxorus
 * Gigalith

Cheren appears at the beggining of the game as one of the player's friends. He is one of the characters who recieves a starter as a present from Professor Juniper. He will always pick the starter with a type advantage to yours. He later re-apears many times throughout the game to battle you, sometimes giving you items when you defeat him. His goal, like many other previous rivals, is to become the pokemon champion. You challenge Cheren right beofre entering Victory Road, and is then seen with Champion Alder before you face N, and Ghetsis.

After you defeat N and Ghetsis, Cheren appears before your house, where he says that he's going to explore the region, starting from Route 1.

He can be seen outside of Nimbassa Town, where he recalls the day that he met Alder, and how it was the start of his new look on becoming stronger. He then says he will go to the Pokemon League, where he will battle you, just like old times.

First Battle (Nuvema Town)
If User Chose Oshawott/If User Chose Tepig/If User Chose Snivy

Second Battle (Striaton City)
If player chose Oshawott:

If player chose Tepig:

If player chose Snivy:

Third Battle (Route 3)
If player chose Oshawott:

If player chose Tepig:

If player chose Snivy:

Fourth Battle (Route 4)
If player chose Oshawott:

If player chose Tepig:

If player chose Snivy:

Fifth Battle (Route 5)
If player chose Oshawott:

If player chose Tepig:

If player chose Snivy:

Sixth Battle (Twist Mountain)
If player chose Oshawott:

If player chose Tepig:

If player chose Snivy:

Seventh Battle (Route 10)
If player chose Oshawott:

If player chose Tepig:

If player chose Snivy:

Eighth Battle (Victory Road)
If player chose Oshawott:

If player chose Tepig:

If player chose Snivy:

Trivia

 * Currently, despite the fact that Bianca has appeared many times, Cheren has yet to have an appearence in the Anime.