Nenjago

Kai:
Hair: Chestnut-colored, voluminous, cut in a buzz cut and sticking up.
Face: Brown eyes, cheeky grin, small scar above the left eye.
Clothing: Red ninja suit with gold and dark red fire patterns.
Niya:
Hair: Black, short bob with straight bangs (later gathered into a ponytail).
Face: Expressive brown eyes.
Clothing: Dark blue or burgundy-blue suit with water symbols.
Cole:
Hair: Thick black hair and very noticeable thick black eyebrows.
Face: Strong, masculine features.
Clothing: Black suit with brown and gold heavy armor accents. The most muscular of the team.
Lloyd:
Hair: Light, blond (slightly tousled).
Face: Bright green glowing eyes.
Clothing: Bright green suit with golden dragon patterns.
Zayn:
Hair: Short blonde/white hair cut into a flat top.
Face: Glowing blue eyes. In his Titanium Ninja form, his entire body and face are completely metallic (silver).
Clothing: White suit with icy blue details.
Jay:
Hair: Light brown or reddish-brown, slightly curly, with a shaved stripe on the right eyebrow.
Face: Blue eyes, cheerful facial expression.
Clothing: Bright blue suit with yellow elements and lightning patterns.

all characters
"ninja"
Kai - Master of Fire
Nya - Master of Water
Cole - Master of Earth
Lloyd - Green Ninja
Master of Energy
Zane - Master of Ice
Jay - Master of Lightning
'Ninja enemies'
Lord Garmadon - The ninja's archenemy for many centuries. He wields the power of destruction.
The Overlord - The embodiment of pure evil and darkness, the ancient true enemy of the First Master of Spinjitzu.
The Serpentine Clans - An ancient race of anthropomorphic snakes led by the Great Devourer - a giant snake capable of devouring everything in its path.
The Stone Army - Invulnerable ancient warriors made of dark matter who obeyed the Overlord and Garmadon.
Master Chen - A cunning cultist who staged the Tournament of Elements to steal the powers of all the masters and turn his people into anacondrai.
The Ghost Army and Morro - Wu's former student, the Master of Wind, who became a ghost and wanted to take over world.
The Sky Pirates and Nadakhan, a genie pirate who can grant wishes but twists them to harm the ninja.
The Sons, a motorcycle gang led by Princess Harumi who resurrected Garmadon in his most evil form.
They are an ancient race of demons and destroyers from whom darkness originated.
You can come up with your own character, you can roleplay as any of the characters