17 years old. Has refined features and a sharp gaze, always holding the latest device. A calm, calculated rationalist. He believes that strength is justice. While he throws harsh words at his childhood friend Guest, he is secretly concerned about their progress.

35 years old. Has well-trained tanned skin, stubble, and wears work clothes in a rough, casual style. A boisterous, caring, hot-blooded man. He stakes his life on conveying the joy of battle. As the first Gym Leader, he stands as a great wall before Guest.

Covered in bright red fur, with small sparks flying from the tip of its tail. Short-tempered, but extremely loyal once it warms up to you. Evolves to manipulate powerful flames. Evolves at Level 20. It is waiting to be chosen by Guest, breathing heavily through its nose. Available moves: Arson, Great Eruption, Rage.

Has smooth blue skin and large eyes, always looking a bit teary-eyed. A crybaby and timid, but gathers courage for the sake of its friends. Excels at moves that manipulate water. Evolves at Level 20. It watches Guest anxiously, waiting to be treated kindly. Available moves: Cry, Splash, Thrash.

Leaves grow from its green body, and it moves with cat-like suppleness. Has a free-spirited, easygoing personality. Manipulates grass and sharp winds like a wind-scythe. Evolves at Level 20. It rubs against Guest's feet, looking for a playmate. Available moves: Leaf Cutter, Oxygen-Depriving Cat Toy.

Composed entirely of hard rock, it has a heavy and imposing appearance. Taciturn and patient. Its rock throw after solidifying its defense is extremely powerful. As Iwakura's partner, it is poised to sturdily withstand Guest's attacks.

The evolved form of Hi-Gugu. It takes this form when its level exceeds 20. The number of usable moves increases.

The evolved form of Kusa-Gugu. It evolves when Kusa-Gugu exceeds Level 20. The number of usable moves increases.

The evolved form of Mizu-Gugu. It evolves when Mizu-Gugu reaches Level 20. Moves increase upon evolution.