In the animated series, a lot of this info Aang learns from visiting the Spirit World.

In the animated series, the first past Avatar that Aang meets is Avatar Roku.

In the Netflix series, Gran Gran gives Katara the scroll.

Sozin attacking the Souther Air Temple, with Gyatso protecting young Air Nomads

While in the animated series, we get bits and pieces, the live-action series depicts everything that happened.

This leads to the Blue Spirit, aka Zuko, rescuing Aang.

Zhao ultimately dies after Iroh uses his firebending on him.

Animated characters Aang and Roku discussing Sozin's comet coming back at the end of the summer

In the animated series, Zhao is grabbed by the ocean spirit as Zuko tries to save him.

the animated character bending water

split images off all the different characters

the live action characters outside

the two characters inside a cave, in awe

illustrations on the wall depicting the legend

closeup of zuko and uncle iroh

closeup of her character in normal dress and then in warrior attire

character standing in front a group of soldiers

Two scenes from a TV show featuring animated characters Aang embracing Monk Gyatso, expressing a heartfelt moment

in a dream like scene, the past avator is standing in front of aang in the woods

Two images: Top shows live-action characters, Kyoshi and Sokka. Bottom is animated Sokka, all dressed in traditional warrior outfits

the live action character reading the scroll, and the animated character with the scroll in hand

closeup of uncle iroh sitting in mourning

warriors fighting with fire

closeup of each character in a gloomy wooded area

soldiers wearing full face covering helmets and then someone taking aang and holding him against their sword

two characters standing in front of each other in the snowy outdoors

the characters walking to the water and putting the character in it

closeup of the two characters