Eret son of Eret

Eret initially comes across as nothing short of cocky and overconfident. He only appears to care about saving his own skin and resists Stormfly's attempts at bonding with him. The large branding on his chest indicates he had a rough, dark past which brought him to his current cynical and self-centered predicament. All of this, however, changes as soon as Stormfly puts herself at risk to protect him from harm. Recognizing the dragon's selfless act, Eret decides to repay the favor by helping her and the Dragon Riders escape from Drago's ship. He slowly switches sides from there forth, allying himself with Berk and its riders. This indicates that Eret was always a good, brave, and honest man at heart and that he has a strong moral compass.

In spite of his cavalier façade, Eret is rather charming, heroic, and kind-hearted. He is also fully aware of his rugged good-looks, displaying a slight arrogance on occasion, but still doesn't appreciate Ruffnut leering at him. He seems to only bond closely with a few selected individuals, namely Hiccup and Astrid.

By the time of The Serpent's Heir, Eret is more or less Hiccup's right-hand man and demonstrates a deep loyalty and respect to him. Upon hearing about Hiccup's chieftain role be challenged by the villagers, Eret stands up for him and tries to take the brunt of the blame. He is willing to defend Hiccup at any cost.

He does show some humility, however, in the third film when Valka openly agrees with many of his ideas, and yet he remains quiet on the fact and prefers to remain in the background while she, Hiccup, and Astrid take lead of situations

Inspired by the Sami and Inuit, Eret's apparel greatly differs from that of the other Vikings and is composed heavily of fur. Eret is a tall, broad-framed man with beefy arms marred with scars, presumed to be from his battles against dragons. He boasts a light blue tattoo on his chin and neat dark brown hair, with two bangs draped in front of his ears.

He wears a beige-white and white tunic under a thick, sleeveless fur vest with a metal owl brooch pinned on it. Two sheaths hang from his thick waistband, one behind his waist, and the other at his left side. He also wears two grey fur wristbands. Eret has a large symbol-like branding on his chest. He says Drago gave it to him the last time he failed him.

In How to Train Your Dragon: The Hidden World, the fur on his vest has been replaced with a tunic made from scales that resemble that of dragons. In battle, he wears an armor inspired by his dragon Skullcrusher, which is green with brown trim, much like the other characters' new dragon scale armor.