Powers and Abilities
Firebending
While the Sun is the origin and inspiration for Firebending, the Dragons were the Firebenders that taught man how to Firebend. The philosophy of Firebending from when it was first created differs radically from that of the present-day Fire Nation. Originally representing warmth, energy and life, the Fire Nation's is fueled by rage and anger. Firebending in itself is not totally devoted to unleashing the power of fire on opponents. In actuality, the focus is placed upon balance. Firebending hinges on mental stability such as inner calm, discipline, emotional stability and physical stability such as a firm balanced form, breath control and general good health. Firebenders are more powerful during the day than the night due to solar sympathy. Firebenders lose their power to bend during a solar eclipse. But, when a Comet is near, a Firebender's power is increased unimaginably, as if they were in the presence of 100 suns. This gives them the ability to fly, produce pillars of fire, and create gigantic fire blasts. Sozin first used the comet to wipe out all the Air Nomads, and thus began the war. Ozai then attempted to use it to wipe out everyone in the Earth Kingdom, but he was stopped by Aang and his allies.
Firebending moves are based mainly on the style of Northern Shaolin. Northern Shaolin Kung Fu features quick, successive and flamboyant attacks, making Firebending the most aggressive of the four bending arts. Firebenders tire much easier in battle than other benders due to breath control. Breath control is one of the first things taught to young Firebenders because without control of breath, they are more prone to lose control of the fire they are creating or controlling, leading to disastrous results.
Specialized techniques
Creating and Redirecting Lightning – Another type of Firebending used in the show is lightning. Mentally, it involves a complete absence of emotion and peace of mind. Physically it requires separating the energies of yin and yang. When the forces collide, the bender only guides, rather than controls, the lightning's direction. By studying the techniques of Waterbenders, Iroh developed a counter to lightning attacks. When attacked, it is possible to redirect the lightning through and out of the body. However, this technique is not without risk. It is important to route the lightning through the stomach to avoid shocking the heart and dying. Azula and Ozai greatly feared this technique since they themselves don't know how to use it. Creating lighting appears to be a secret technique of the Fire Nation's royal family, as only Azula, Iroh, and Ozai are shown creating lightning, and it is revealed that Zuko would also have this ability were it not for his inner emotional strain. Lightning redirection is even more rare; by the end of the series Iroh, Zuko, and Aang are the only benders to know the technique of redirection.
Flight – Some skilled Firebenders are able to project flames out of their feet, resulting in short boosts that enable them to jump much higher. During Sozin's Comet, when a Firebender is most powerful, this ability is greatly enhanced and they are able to sustain full flight for an unlimited amount of time.
Combustion – Displayed a very unique form of Firebending, the ability to superheat air into a thin beam which results in large explosions. No other character has displayed this ability and it is unlikely that any other can, as the power appears to be connected to the eye-shaped tattoo on his forehead.
Breathing Fire – Iroh can breathe fire like a dragon with this skill, part of the reason for his nickname, "The Dragon of the West." Aang and Zuko are also shown using this technique a few days before the day of Sozin's Comet. On the day of Sozin's Comet, Azula and the Fire Lord Ozai also were able to breathe fire. Azula is also shown using this technique in the last episode, in addition to what looked like fire coming from her ears.
Blue Flames – Azula has the ability to bend blue fire, which has a much more intense heat. She is the only Firebender that has shown this ability. Blue fire was shown to be more powerful than regular fire throughout Book 2, but seemed less powerful in Book 3. However, it still seemed necessary to do things like jet propulsion and limited flight.
Powers and Abilities
Bio-Fission: He can replicate his own cellular structure, creating a perfect duplicate of himself.
Metamorphosis, Malleability, Plasticity, Elongation: Clayface can manipulate his physical features to make himself look like nearly anyone or anything. He can even alter his color. The only restriction appears to be a limited volume of mass.
Voice-shifting: As well as changing his appearance, he is able to change his voice to mimic almost any individual.
Natural Weaponry: Hagen is able to turn his arms into weapons such as axes, swords, hammers, etc.
Flight: Depending on his form, he may be able to fly. In his first clash with Batman, Hagen turned into a giant eagle to escape.