Version 1 found here (no blood)
[ID: Digital fanart of Sokka, Katara, Toph, and Aang, Book 2 era, from the waist up, as lineart with simple backgrounds. Trigger warning: descriptions of blood in the ID.
Sokka is in the front, Aang behind him, Toph to his upper right and Katara to his upper left. Sokka is staring straight at the viewer with creepy, half-lidden eyes. He’s got a maniacal smirk, and his tongue is darting out to lick the blood off the boomerang he holds in his right hand. His left hand is hidden behind his back. There is blood splattered on his right cheek, and staining his tunic and forearm wrappings. It also clings to his fingers and is spread on the sharp edge of his boomerang. The blood is on the tip of his tongue and dripping out of his mouth.
Katara is turned slightly sideways, laughing down at the viewer. (It’s probably a good villain laugh.) Her hands are raised and in claw shapes at the height of her shoulders. A waterwhip is flowing around her shoulders, with smaller whips circling her hands, except she’s not bending water, she’s bending blood. It stains her dress and her necklace.
Toph has her fingers together and her hands cupped and raised at her sides in an earth bending pose (one she used at the Earth Rumble). She has a wide, unsettling grin on her face, and her eyes are shadowed to the extent where the viewer cannot see them, making her expression even more Evil. Behind her, sharp peaks of rock rise up, their sharp edges soaked in blood, and small debris floats around her. The tips of her fingers are drenched in blood, as are her clothes.
Aang is in the meditative pose he assumes when in the Avatar state, with his hands in fists and together in front of himself, except instead of a tranquil expression he is smirking at the viewer, his right brow raised. There are blood splatters on his right cheek and on his clothes. He is in the avatar state, but his eyes and tattoos glow black and red instead. Behind him rises the dark, black and red shadow of Vaatu. End ID]