Aang is the main hero of the Nickelodeon's television series, Avatar: The Last Airbender, while a minor hero in the spin-off television series, Avatar: The Legend of Korra. The sole survivor of the Air Nomad's Southern Temple, Aang is also one of the "Avatar"'s incarnations, bent on keeping order and peace between the spiritual and the cosmic realms. A young prodigy, able to control all four basic elements, including Earth, Water, Fire, and Air, Aang portrays the role of the relucant hero in the series, assisting his newfound friends in a journey to stop the Fire Nation's expanding empire, while also testing his own identity and role in the universe. He appears in the second Heroes vs. Villains War as one of the main heroes who clashed with the forces of evil.
Elsewhere, Ariel and Flounder explored the Arctic Ocean, where she encountered two young siblings Sokka and Katara, hailing from the Southern Water Tribe, fishing. As the pair were arguing, Katara unconsciously unleashed an ocean wave with her waterbending powers, destroying a nearby iceberg. As the iceberg tore apart, chunks of floating ice fell upon Flounder, freezing him alive. As Ariel tried to release her companion, Katara used her powers to melt the ice, freeing Flounder. As Ariel, Katara, and Sokka introduced themselves to each other, another iceberg, containing two lifeforms, rose to the surface. Seeing that one of the occupants of the iceberg was a young boy, Ariel used an icicle to break open the iceberg. Ariel and the two siblings watched in astonishment as a bright column of light emerged from the ice and shot high into the sky.
In the Arctic, Ariel, Katara, and Sokka uncovered the lifeforms within the iceberg, revealed to be a young boy named Aang and his flying bison Appa. Though Sokka had a distrusted Aang, Katara didn’t believe him to be dangerous. After introducing themselves, the small group headed back to Katara's tribe.
Having arrived at their village, Sokka is annoyed by Aang's playful nature (much to the amusement by Katara and Ariel) and exclaims to him that they need to prepare for the war. Aang knows nothing about this but before his friends can explain, they are under attack. Captain Hook, Pete, and Shan-Yu arrive and demand to know where the Avatar is. Aang shows up and right after a short fight against Shan-Yu's soldiers, Aang agrees to go with them so long as they leave everyone alone.
Before Ariel, Katara, and Sokka head off to go rescue Aang, Aladdin and his crew arrive and says they're here to help.Hook, Pete, and Shan-Yu deliver Aang to Zuko. Right as the trade-off is starting, Aladdin and co arrive to the rescue. Soon a battle on the ship breaks out. Things don't seem to look good until Aang reveals his true powers to his friends and enemies.Right as the heroes make a getaway, Zuko and Iroh try to make one final attack only to be counterattacked by an unexpected surprise.Aang tells his friends how he never wanted to be the Avatar and is worried about the war. Everyone tells him it will be okay and that they will be with him during the journey.