|“||No! You will obey me now!||„|
|~ Samukai after deciding to betray Garmadon|
Samukai is a recurring antagonist in LEGO Ninjago: Masters of Spinjitzu, serving as the secondary antagonist of the Pilot Episodes, as a posthumous antagonist in Season 1: Rise of the Snakes, as a minor antagonist in Season 2: Legacy of the Green Ninja, as a cameo antagonist in Season 6: Skybound, and as one of the secondary antagonists of its TV special Day of the Departed. He is a powerful four–armed giant skeleton who was the ruler of the Underworld until Garmadon arrived and dethroned him by besting him in a duel, and became the leader of the Skulkin. Samukai and his men are looking for four golden weapons that grant great power, and ultimately he and Lord Garmadon defeat the ninjas and take the weapons from them. However, instead of giving his master the weapons, Samukai betrays Garmadon and tries to use the weapons himself, only to be destroyed by their power. He is the first character in Ninjago to actually die.
The actual figure of Samukai is the rarest and most expensive in the Ninjago toyline, as he only appears in the two largest sets of the first year's series and does not have a spinner unlike every other character. As a result, he regularly sells for at least 20–30 dollars online.
Many years after his death, Samukai was finally resurrected by Sensei Yang, alongside General Kozu, General Cryptor, Master Chen, and Morro to destroy the Ninjas. He eventually was defeated and sent back into the Departed Realm.