stylistic:tone, structural:reformatting
Monkey King

Sun Wukong (孫悟空) (pinyin: sūnwùkōng) is the name given to this character by his teacher, Subhuti, the latter part of which means " Awakened to Emptiness " (in the Waley translation, Aware-of-Vacuity); he is often called the " Monkey King ". He is born on Flower Fruit Mountain from a stone egg that forms from an ancient rock created by the coupling of Heaven and Earth. He first distinguishes himself by bravely entering the Water Curtain Cave on the mountain; for this feat, his monkey tribe gives him the title of "Handsome Monkey King (美猴王, měi hóuwáng)." After seeing a fellow monkey die because of old age, he decides to travel around the world to seek the Tao, and find a way to be able to live forever. He eventually found the "Grand Master of Bodhi (菩提祖師, pútí zǔshī)," who taught him the 72 heavenly methods of transformation and a "somersault cloud" which allows him to travel 108,000 li almost instantaneously. After angering several gods and coming to the attention of the Jade Emperor, he is given a minor position in heaven as the Keeper of Horses (弼馬溫, bìmǎwēn) so they can keep an eye on him. When Sun realizes that he was given the lowest position in heaven and is not considered a full-fledged god, he becomes very angry. Upon returning to his mountain, he puts up a flag and declares himself the "Great Sage Equal to Heaven (齊天大聖, qí tiān dàshèng)." The Jade Emperor dispatches celestial soldiers to arrest Sun Wukong, but none succeed. The Jade Emperor has no choice but to appoint him to be the guardian of the heavenly peach garden. The different varieties of peach trees in the garden bear fruit every 3,000, 6,000, and 9,000 years, and eating their flesh will bestow immortality and other gifts, so Sun Wukong eats nearly all of the ripe peaches. Later, after fairies who come to collect peaches for Xi Wangmu 's heavenly peach banquet inform Sun Wukong he is not invited and make fun of him, he once again begins to cause trouble in Heaven, stealing heavenly wine from the peach banquet and eating Laozi 's pills of immortality. He defeats an army of 100,000 celestial troops, led by the Four Heavenly Kings, Erlang Shen, and Nezha. Eventually, the Jade Emperor appeals to the Buddha, who seals Wukong under a mountain called Five Elements Mountain after the latter loses a bet regarding whether he can leap out of the Buddha's hand in a single somersault. Sun Wukong is kept under the mountain for 500 years and cannot escape because of a seal that was placed on the mountain. He is later set free when Tang Sanzang comes upon him during his pilgrimage and accepts him as a disciple.

His primary weapon is his staff, the " Ruyi Jingu Bang," which he can shrink down to the size of a needle and keep in his ear, as well as expand it to gigantic proportions. The rod, which weighs 17,550 pounds (7,960 kg), was originally a pillar supporting the undersea palace of the Dragon King of the East Sea, but he was able to pull it out of its support and can swing it with ease. The Dragon King had told Sun Wukong he could have the staff if he could lift it, but was angry when the monkey was actually able to pull it out and accused him of being a thief. Sun Wukong was insulted, so he demanded a suit of armor and refused to leave until he received one. The Dragon King of the East and the other dragon kings, fearful of Sun wreaking havoc in their domain, gave him a suit of golden armor. These gifts, combined with his devouring of the peaches of immortality, erasing his name from the Book of the Dead, drinking heavenly wine from the Peach Festival, eating Laozi 's pills of immortality, and being tempered in Laozi 's Eight-Trigram Furnace (after which he gained a steel-hard body and fiery golden eyes that could see far into the distance and through any disguise), makes Sun Wukong by far the strongest member of the pilgrimage. Besides these abilities, he can also pluck hairs from his body and blow on them to convert them into whatever he wishes (usually clones of himself to gain a numerical advantage in battle). Furthermore, he is a master of the 72 methods of transformation (七十二变), and can transform into anything that exists (animate and inanimate). Notably, however, Sun cannot fight as well underwater, and often the pilgrimage must rely on Pigsy and Sandy for marine combat. The monkey, nimble and quick-witted, uses these skills to defeat all but the most powerful of demons on the journey.

Sun's behavior is checked by a band placed around his head by Guanyin, which cannot be removed by Sun Wukong himself until the journey's end. Tang Sanzang can tighten this band by chanting the "Ring Tightening Mantra" (taught to him by Guanyin) whenever he needs to chastise him. The spell is referred to by Tang Sanzang's disciples as the "Headache Sutra". Tang Sanzang speaks this mantra quickly in repetition when Sun disobeys him.

Sun Wukong's childlike playfulness and often goofy impulsiveness is in contrast to his cunning mind. This, coupled with his great power, makes him a trickster hero. His antics present a lighter side in the long and dangerous trip into the unknown.

After completion of the journey, Sun is granted the title of Victorious Fighting Buddha (斗战胜佛; 鬥戰勝佛; dòu zhànshèng fó) and ascends to Buddhahood.