Ren

History
Ren comes from Clover Town, his first pokemon was Mareep.

Ren participated in the 53rd Swamp Town Tournament in which he was defeated in the first round. His Roselia was critically injured in the battle with Kitty Hawks Murkrow and on the verge of death, after he lost, he left the stadium, leaving the injured Roselia in the middle of the battle before it was taken to the Pokemon Center.

Ren later was seen by the gang in Route 5, this encounter revealed how violently he trained his pokemon, he would command the pokemon to stand and take the hits from his other pokemon, this teaches his pokemon to have no mercy and to never give up, if they fail his commands they are punished.

In the encounter Ricky yelled at Ren telling him how bad of a trainer he is and challenged him to a battle. Ren used his already Tyrogue and Bunnelby which were already tired and hurt from his strict training and they quickly fell to Ricky's Tympole. Ren won due to a disqualification of Ricky because Ricky punched him in the face.

After the battle Ren thanked Ricky telling him it the battle "killed 2 birds with 1 stone" before leaving to continue training his pokemon.

Personality
Ren is a really quiet person, he usually stays by himself. But when it comes to training his pokemon he is merciless, in his training he forces his pokemon to be hit by his other pokemons attacks. If his pokemon fail to achieve his commands they are punished or abandoned.

Ricky
Ren finds Ricky to be an annoyance, Ricky strongly disagrees with Rens training ways and demands he change which Ren isn't likely to do.

Pokemon
Pokemon on Team

Mareep
appears to be the main pokemon on Rens team, thogh it hasn't been seen in battle, it appears strong,

Tyrogue
Tyrougue is a pokemon Ren caught recently, it was seen in route 5 being brutally trained before being used in a battle agains an angered Ricky, it fell quickly in the battle due to already being injured through training.

Bunnelby
Bunnelby was caught by Ren recently and also went through rens brutal training method, it was used in a battle against ricky and quickly fell due to it being weak from rens training, Ren commented that he was diappointed in bunnelby. It is unknown whether Bunnelby was released or not.

Pokemon he used to have

Roselia (Released)
Roselia was used in the swamp town tournament, after being quickly defeated by Kitty and her murkrow he left it in the arena, releasing it before leaving the town.