He could be a new character created by the fanfiction writer. Maybe he's a strong and ambitious son of Greyjoy, with a desire to prove himself in the cut - throat world of Westeros, much like the other Greyjoy characters we know from the original series.
One interesting fanfiction could be about Yara leading the Ironborn in a new conquest. Maybe she discovers a hidden island full of treasures and has to battle both external enemies and deal with internal power struggles among her own people.
Theon could be a great character to pair with Yara. Their complex relationship as siblings could be explored further. Maybe in the fanfiction, they work together to redeem the Ironborn's reputation after all the chaos caused by Euron.
He could play the role of a hero. In a fanfiction, he may be the one to save the Iron Islands from a great threat, like an impending invasion or a natural disaster. He uses his wits and courage, which might be different from the typical brute force associated with the Greyjoys. He could also be a diplomat, forging new alliances for the Iron Islands, like making a pact with the Lannisters to gain wealth and protection in exchange for naval support.
The sigils are not just random symbols. They are deeply intertwined with the identity of the houses. Take the Lannister sigil of the lion. It symbolizes their power, pride, and their position as one of the most dominant houses in Westeros. The graphic novel might show how these sigils are used in different contexts, like on banners during battles or as a mark of authority in their castles.
In fanfiction about House Reyne, we could see alternate storylines. For example, what if the Reyne's had managed to avoid their brutal end at the hands of the Lannisters? Maybe they could have formed an alliance with another powerful house against the Lannisters. Their sigil, the red lion, could be a symbol of their resurgence in these fictional tales.
Well, it might feature a detailed and immersive art style. Since it's related to 'Game of Thrones', perhaps it will have a dark and gritty look, with rich textures for the sigils. The artists may use a combination of fine lines and shading to bring out the significance of each sigil.
The sigil of House Stark in the novel is a direwolf. It represents the strength, loyalty, and wild nature associated with the Stark family. The direwolf is a powerful and feared creature in the fictional world, much like the Starks themselves.
One great 'Game of Thrones House Arryn fanfiction' is 'The Arryn Ascent'. It focuses on the rebuilding of House Arryn's power. The author beautifully describes the Vale's landscapes and the political maneuverings within the house.