Tristan Liones

Tristan looks very much like his parents. He has the same face and hairstyle as Meliodas, although his hair is long and silver like Elizabeth's. He has heterochromia: his right eye is blue like Elizabeth's and his left eye is emerald green like Meliodas's, and he has somewhat androgynous features.
At 16, he is taller than his parents and wears a blue earring very similar to Elizabeth's in his right ear.

In his first appearance in The Four Knights of the Apocalypse, he wears a cyan buttoned suit with a collar, matching gloves, silver boots, and a breastplate with a golden shield. Over this, he wears a loose-fitting yellow jacket with a thick white lining and an orange shield, fastened only with the top button. Before leaving Liones, Tristan receives a new outfit consisting of a white shirt with turquoise trim on the sleeves and ruffles at the collar, finished with a winged brooch, black trousers, and golden armor on his right leg and foot.

Tristan is a very calm and tenacious young man. He shows no affection for the role of prince, preferring to defend his kingdom as a Holy Knight. He possesses a strong sense of justice and feels the need to protect his kingdom from any threat, including his father and the Seven Deadly Sins for their incriminating actions. Later, Tristan learns the history of the Sins, which inspires him to follow in his father's heroic footsteps.
After accidentally injuring Lancelot with his demonic powers, Tristan was traumatized by the incident and developed an aversion to violence and that power, and by extension, to any association with it or even being compared to his father in that regard. Instead, Tristan becomes more pacifist, like his mother, and enjoys any comparison with her. He also prefers to use his divine powers during combat. However, he does not hesitate to use force when necessary.