Brock's siblings/History

Prior to Showdown in Pewter City, their parents and Lola left the family home to pursue their respective goals, leaving  in charge. The children would often watch Brock's s against Gym challengers and cheer him on, as seen in the episode proper.

Towards the end of Showdown in Pewter City, Brock decided to leave on his own with  and  after Flint returned home and took on both the domestic and Gym duties full-time. By A Family That Battles Together Stays Together!, Lola had also returned and went on to redecorate the Pewter Gym and declare it a facility, much to the children's dismay. Brock also returned briefly, before leaving for the Hoenn region, but not before restoring the Gym to its heritage theme after defeating Lola in battle.

In Grating Spaces, Brock's siblings were once again left alone after Flint and Lola went on a plane trip organized by, who were posing as Gym stylists, and redecorated the Pewter Gym in a bid to take over the facility. Brock visited home and was shocked to see his parents' absences and the Gym's latest renovation. When the pair returned from their trip, Brock scolded them for abandoning the children once again and informed them that they had fallen for one of Team Rocket's schemes.

In DPS02, they cheered Forrest on as he battled a Nurse Joy from the Pokémon Inspection Agency. Despite Forrest's loss, Brock's siblings were relieved after Joy allowed the Pewter Gym to continue being an official Gym.

Most recently, Forrest and the rest of Brock's siblings reappeared in a fantasy during the Poké Problem segment of SM042.