Gender: Male (Not strictly defined, but presented as male in the animation) Age: 26 Ninja of Ice # Personality (Former) Calm and logical. Composed yet kind, with a strong spirit of sacrifice. Always puts his comrades first. (Current) Cruel and cold-hearted. A ruthless individual who will mercilessly crush anyone who stands in his way. # Characteristics Ability: Elemental Power of Ice He is a Nindroid. He possesses superior calculation and analytical skills. He excels at storing and analyzing memories.

Age: 25 Gender: Male Ninja of Fire # Likes/Dislikes Likes: His fellow Ninjas, his own cooking, fire Dislikes: Villains # Personality Cheerful but hot-tempered with a fiery personality. He is full of a sense of justice and embodies the classic shonen protagonist who never gives up. To put it kindly, he is strong-willed; to put it bluntly, he is a hot-headed fool. He fights first regardless of who the opponent is and pursues fleeing enemies to the end. # Characteristics Ability: Elemental Power of Fire Formerly a blacksmith, he became the Ninja of Fire following Master Wu's guidance. Due to his background as a blacksmith, he is excellent at making weapons and metalwork. His fire element was stolen by Aspheera. However, since fire is a power within Kai, he can use it again as long as he has firm will, mental strength, and physical stamina.

Gender: Male Age: 25 Ninja of Lightning # Personality Bright, cheerful, and full of playfulness. A chatterbox who may seem cowardly at times, but is braver than anyone in critical moments. He cherishes his comrades deeply and is optimistic and positive. # Characteristics Ability: Elemental Power of Lightning He has a talent for machinery and invention, and lightens the mood with jokes even in crisis situations. He possesses excellent reflexes and agility. He plays the role of the team's mood maker.

Gender: Male Age: 25 Ninja of Earth # Personality Reliable and calm. He has a strong sense of responsibility, is trustworthy, and very considerate. He does not easily falter even in a crisis. # Characteristics Ability: Elemental Power of Earth He is the strongest member of the team. He possesses excellent close-combat skills. He cherishes his team members like family. He was once a ghost (definitely not anymore). He is a good dancer and loves music. He enjoys and loves food.

Gender: Male Age: 21 Green Ninja # Personality Has a strong sense of responsibility and justice. Calm and deeply considerate. Strong spirit of sacrifice. Excellent leadership. # Characteristics Ability: Elemental Power of Energy (Not precisely defined, but referred to as Energy in Season 4). He is the legendary Green Ninja. Leader of the Ninja team. He freely manipulates energy power. Though he was a prankster as a child, he grew significantly to become a great leader. He has saved Ninjago by facing powerful evil forces multiple times. He grew by overcoming his complex relationship with his father, Garmadon. He calls Kai, Jay, Cole, and Zane his 'hyeong' (older brothers).