Tower Tycoon Palmer is a character appearing in Pokémon Diamond and Pearl Adventure!, who is the Frontier Brain of the Battle Tower in the Battle Frontier in the Sinnoh region.
Palmer is a tall man, who has orange eyes and yellow eyes. He wears green coat with yellow buttons, a white shirt, brown pants with a black belt, black boots and black gloves.
He is a very spirited and energetic young man. Mitsumi stated that Palmer's personality is very similair to his son's personality.
Palmer met Hareta and Mitsumi at the Fight Area, attacking Hareta with his Dragonite. Hareta asked if he was a member of Team Galactic and Palmer told him what would happen if he was, disguising himself as a Team Galactic member, so Hareta attacked him with his Empoleon. When Dragonite knocked Empoleon down with Draco Meteor, he was disappointed as he expected more but he then was surprised that his Dragonite was trapped in Empoleon's Whirlpool. The battle ended in a tie and Palmer started to laugh, saying that he had to challenge Hareta when he found out that he was Kaisei's son. He then introduced himself and told that Mitsumi figured it out right away and attempted to flirt with Mitsumi but Jun appeared and started to argue with him. Palmer then had to leave but before leaving, he told Hareta the message that Kaisei gave to him which told Hareta to look for Giratina.
Tower Tycoon Palmer is the only Frontier Brain that appears in Pokémon Diamond and Pearl Adventure!.