Meliodas of anime Nanatsu no taizai

I've resolved to find the Seven Deadly Sins with you and stop the Holy Knights. Even if you were to die, I would fulfill the promise made with you.

— Meliodas to Elizabeth Liones in even if you died

Meliodas 

Meliodas is the former Dragon's Sin of Wrath of the Seven Deadly Sins. He is the main protagonist of the series, and was the owner of the renowned tavern Boar Hat. His Sacred Treasure is the Demon Sword Lostvayne and his inherent power is Full Counter. He was also the head of the Ten Commandments, as Meliodas the Love Jiai no Meriodasu, a former member of the Stigma, and the eldest son of the Demon King.

Personality

Meliodas dominant traits are his frankness and his utter fearlessness, shown when he remains composed seeing the Rust Knight who was later revealed to be Elizabeth Liones. Due to his horrible cooking, when his customers vomit onto the Boar Hat's floor, he instructs Hawk to clean up the scraps, and scares him by saying phrases such as "roast pig" if he complains, hinting he may roast the talking pig. He is also shown to be very bawdy and loves to frequently tell jokes. He also has a strong sense of justice and is willing to help people in distress. Even when he is severely injured, he tries not to show weakness, and stays strong in front of his companions. He holds resentment for himself, deeming himself a failure as an older brother to Zeldris due to the suffering he caused him.

Despite his title as the Sin of Wrath, he maintains the facade of a very calm person. However, if his companions or friends are harmed in any way, he is shown to be capable of extreme rage. He is also enraged when someone tries to take his sword, with this rage being capable of scaring even a Holy Knight and causing him to leave a permanent scar on Ban's neck, despite his regeneration abilities. It has been hinted that Meliodas is guilt-ridden over the fate of Danafor, saying that his sin was being unable to save the kingdom. Ban and Cain point out that Meliodas tends to be soft and naive, due to him never killing anyone, even someone like Guila, who was a serious threat to the group. Meliodas dislikes killing, preferring to be merciful.