Takuya Kanbara

In the anime series Digimon Frontier, Takuya Kanbara is the leader of the team, chosen to wield the Spirits of Fire that hold AncientGreymon's power. Takuya begins as a typical goggle boy, a member of his school's soccer club. He was at home sitting at the table just before his brother Shinya's birthday party when he received an SMS message from a mysterious voice, which was later revealed to be Ophanimon.

Takuya has a strong sense of justice, and tries to do the right thing. He is energetic and athletic, tending to act without thinking first. Takuya's hotheaded personality generally ends up in him arguing with Koji but eventually they put away their differences and become friends. Takuya acts like an older brother to Tommy, who reminds him of Shinya. He also has a liking for Zoe, though he never admits it.

Flamemon
When he returns to the human world after his first encounter with Duskmon, Takuya becomes a half-beast, half-human Digimon named Flamemon. Because his fighting spirit had disappeared, he couldn't utilize his true power. However, after witnessing himself in a time paradox, Flamemon overcomed his fear and returned to the Digital World as Agunimon.

Attacks

 * Baby Salamander: Send an attack of his flame aura.
 * Noble Heart: Hurls himself into the sky covered in fire.
 * Fire Toss: Tosses a small exploding fireball.

Agunimon
Using the Human Spirit of Fire, Takuya becomes this majin Digimon. In battles, he uses martial arts & pyrokinesis.

Attacks

 * Pyro Punch: Releases a flame dragon from his fists.
 * Pyro Darts: Throws small bits of fire at his target.
 * Pyro Tornado: Spins really fast using a fire tornado and then strikes with a roundhouse kick.

BurningGreymon
Using the Beast Spirit of Fire, Takuya becomes this demon-dragon Digimon. He obtained the spirit from Shamanmon, who was possessed by the spirit's wild power and it took Takuya a while to master his newly acquired beast-form. Able to withstand the heat of magma, BurningGreymon burns with passion of a warrior to the extent of his enemy's strength.

Attacks

 * Pyro Barrage: Fires a solar heatwave laser from the "Rudori Tarpana" cannons on his arms.
 * Wildfire Tsunami: Surrounds himeself in a fire aura and then strikes his opponent, similar to Flamedramon's Fire Rocket attack.

Aldamon

 * Arhdamon in the Japanese version.

A knight of exploding heat, Takuya obtains the power to combine both his spirits when Seraphimon's Digi-Egg energized him during his fight with ShadowSeraphimon. As result, he has Agunimon's wisdom and BurningGreymon's wild power.

Attacks

 * Brahma Shil (Solar Wind Destroyer): Aldamon rasies his hands in the air and gathers energy into a tight fire ball and hurls it towards the target and it gets bigger as itmoves.
 * Brahma Sutra (Atomic Inferno): The Cannons on his hands realease thousand of rocketing comet fireball missles.

EmperorGreymon

 * KaiserGreymon in the Japanese version.

A dragon knight, Takuya obtains this form when he combines his Spirits of Fire with the Spirits of Ice, Wind, Wood & Earth. He wields the Dragon Soul Sword. The armor that is around his arms is called Wyvern Hero and the armor around his knees is called Naga Hero.

Attacks

 * Flame Cross [Flame Dragon Attack] (Dragonfire Crossbow): His sword gathers energy after the Tiamet Hero around the Dragon Soul Sword is released to form a crossbow-like weapon and it then fires a massive fire burst.
 * Soul Dragon [Nine-Headed Dragon Ranks] (Pyro Dragons): Drives his Dragon Soul Sword into the ground and generates nine fire dragons which he then sends at his target.
 * Flame Blade
 * Hurricane Flame
 * Slicing Sword Dance Cut