After several weeks, the Monkey King trained MK as well as giving him advice. However, when the Monkey King learned that Macaque was being secretly training with MK so he can steal his powers, he engages with in a fight with him and was able to win after reminding MK about his training.
This description was taken from official source. Do not modify it.
Monkie Kid™ Heroes
Centuries ago, the wise king vanished on his magical cloud. Or maybe he just transformed himself into one of his 72 known forms? Either way, now he’s back and ready to train a new generation of demon fighters.
As depicted in the legend in LEGO Monkie Kid, the Monkey King is a confident individual, especially in battle. He doesn't shy away from a challenge, regardless of the opponent's size or strength, as seen when he showed no fear in his fight against the Demon Bull King. When he encounters MK at Flower Fruit Mountain, he tells him that the Demon Bull King isn't an actual threat, as he stated that defeating the Demon Bull King would be considered a trial that MK can handle.
Since his retirement upon passing his Golden Staff to MK, the Monkey King has become somewhat lazy, often sitting around Flower Fruit Mountain eating. He doesn't step in fighting demons unless he is giving advice, or it concerns MK's well being. Despite his laziness, the Monkey Kings makes time to train MK.
Appearance & Variants
The Monkey King is an anthropomorphic monkey relatively the size of an average human teenager with brown fur covering his body and tail, and peach fur for his torso, and peach skin for his face, ears, hands, and feet. The fur on his head is slicked back, tied in red ribbons. He has pastel maroon shading across his yellow eyes and thick black eyebrows.
Battle: The Monkey King's clothing consists of golden armor for his chest and shoulders, and yellow shirt behind a red, blue, and yellow gi with black and gold decorates for his sash and boots, and two red scarves at the back.
Baby: After being born from a stone, the Monkey King wore nothing at all but a green leafy loincloth.
Classic: Sometime after being born from a stone, the Monkey King wore an orange robe with a black trim over a black shirt and had a dark turquoise neckerchief. He also had red pants and black shoes, and had a white belt around his waist.
Apprentice (non-canon): As an apprentice, Monkey King wears a sand blue robe with a dark bluish gray trim, yellow sash belt, and dark blue pants.
In the episode "Calabash", when MK was trapped in a magical artifact known as the Calabash, he was sent to an alternate universe where everything's perfect. There, he encounters Monkey King's Calabash counterpart, who tried to persuade MK into accepting his new life in the Calabash.
Immense Physical Attributes - As shown during his fight against the Demon Bull King, the Monkey King possesses incredible physical abilities. He yields immense speed, strength, agility, and reflexes to take on the toughest of enemies.
Immense Combat Skills - The Monkey King is one of, if not the greatest fighter of series. His centuries of facing off against powerful deities have made him a master martial artist, allowing him to battle and defeat powerful enemies including those of the Demon Bull Family and various demons.
Staff Proficiency - The Monkey King's skill with his Golden Staff is unparalleled. In addition to his skills with his staff, the Monkey King can change its size to his whim.
Immortality - Due to gaining immortality in five ways during his journey to the west, the Monkey King is ageless and yields eternal youth, allowing him to live out 500 years after defeating the Demon Bull King.
Chi Manipulation - Although not directly stated, the Monkey King can manipulate yellow Chi energy to increase the force of his attacks. This is first demonstrated in his battle against the Demon Bull King when surrounds his fists with the energy to pulverize the stone debris and smash the Demon Bull King into the ground.
Cloud Generation - The Monkey King can generate his signature somersault cloud to use as transportation.
Flight - Even without the of his cloud, the Monkey King can still fly on his own accord.
Shapeshifting - The Monkey King can shapeshift into one of his 72 forms. However, he can't change his tail.
Replication - As seen in "Monkie Kid: A Hero is Born", the Monkey King has the ability to replicate himself via the stands of his fur.
The Monkey King's voice actor, Sean Schemmel, is famous for voicing the protagonist, Son Goku, of Akira Toriyama's hit Japanese media franchise, Dragon Ball. Goku himself, much like the Money King in LEGO Monkie Kid, is based on the actual Sun Wukong character of the classic Chinese novel, Journey to the West. Goku shares many similarities with the Monkey King, including immense strength, a magical yellow cloud as transportation, and a magical, length-changing staff as a weapon.
In Chinese dub, the Monkey King refers to the Demon Bull King and Princess Iron Fan as his brother and sister-in-law respectively.
This is a reference to Journey to the West, where Monkey King and DBK became sworn brothers at some point in time.