Forrest (Japanese: ジロウ Jirō) is a Rock-type Pokémon specialist. He is the brother of Brock and eight other children and is the son of Flint and Lola. He is the second oldest child in the family.
He is currently the Gym Leader of the Pewter City Gym, and gives out the Boulder Badge to challengers who defeat him.
Years ago, Forrest's father, Flint, left home to become a great Trainer and never returned. His mother, Lola, soon followed. This left his eldest brother, Brock, in charge of the family. Brock took care of them for many years, running the Pewter City Gym at the same time. Although in truth, Brock wanted to travel and become a breeder. Eventually, Flint returned, allowing Brock to leave on a journey with a Trainer he had recently met, Ash.
Flint ran the Gym in Brock's absence, but was ousted from the position when Lola returned home. Lola usurped the title of Gym Leader from Flint and turned the Gym into a Water-type Pokémon Gym, something that angered Forrest, who was dedicated to Rock types.
Brock returned home and was shocked to find what happened. Forrest and Brock commiserated with each other over the sad state the Gym had fallen into. Brock defeated Lola in a battle, and convinced her to restore the Gym to its former state. In the process, he lent Forrest most of his Pokémon and passed the title of Gym Leader onto him.
When Brock returned from Sinnoh, Forrest was with a Nurse Joy from the PIA, but she demanded to see the true Gym Leader, Brock. So Brock battled the Nurse Joy and Forrest acted as referee. Brock lost and Nurse Joy was forced to close the Gym, but she gave them one more chance.
If Forrest battled her and he won, she would not shut down the Gym. He was surprised when Nurse Joy called upon her Latias, a legendary Pokémon. Forrest put up a tough fight with his Rhyperior, but both ended up losing to Latias. Still, Nurse Joy was impressed by his skill and decided to name him as the official Gym Leader of Pewter City.
In the English dub only, Forrest seems to have the same interest in girls as his older brother Brock does.
- Onix → Steelix
- It is implied in Pocket Monsters: The Animation that Forrest alongside his other siblings and possibly even Brock himself may not have been sired by Flint, as it mentioned that Lola, prior to ultimately abandoning her family, had "married again and again and had dozens of kids" in a desperate attempt to keep Pewter Gym (due to her various husbands fleeing when they were losing due to the strict regulations of running a gym).