Tate and Liza

Tate and Liza are the tag-battling -type Gym Leaders of Mossdeep City in the Hoenn region. Due to them both being the Gym Leader of Mossdeep City, all battles against them are Double Battles. When you defeat them, they give you the Mind Badge. This badge is sometimes mistaken for the Soul Badge due to that both badges are heart shaped. All of their Pokémon are dual-typed.

Manga
Because of the calamities all Gym Leaders had a meeting, they talked about which Team is good, Team Magma or Team Aqua, but they didn't attend it because they were at Mt. Pyre guarding the Sacred Orbs.

Anime
Tate and Liza first made their debut in It's Still Rocket Roll to Me!. They were still twins though Liza bragged that she was the older of the two and always beat Tate in battle, which irritated Tate. The twins relate to both May and Max in their own way, with May and Liza being the older siblings and Tate and Max being younger siblings. Tate had to guide a shuttle down when Team Rocket attempted to steal it.

They battled Ash in Solid as a Solrock with their mom as the referee. Though they got of to a rocky start at first they eventually got in synch in their rematch. Unfortunately they lost to Ash thanks to an improvised move called "Thunder Armor".

Emerald
Gym Battle=

First Rematch=

Second Rematch=

Third Rematch=

Fourth Rematch and Beyond=

Psychic-type Tournament
Tate=

Liza=

Hoenn Gym Leader Tournament/World Leaders Tournament
Tate=

Liza=

Trivia

 * They are the first dual Gym Leaders. This is followed by Triple Gym Leaders in Unova.
 * However, you don't do a Triple battle against Cilan, Chili & Cress, so Tate and Liza are actually the only gym leaders that you fight in a Double battle.
 * So then they are the only Gym Leaders that don't fight in a single battle.
 * Tate and Liza are the youngest Gym Leaders being around eight years old.
 * Also, they seem to be the 2nd youngest Pokémon trainers, behind Kindergartners.
 * However they were the youngest trainers at the time of their original game appearance.
 * Tate and Liza's outfits are the flipped versions of each others.