Yun

Little is known about the street urchin from Makapu named Yun before the Earth Kingdom sage Master Jianzhu came across the boy beating passersby at Pai Sho. The boy’s brilliance caught Jianzhu’s eye, and the former companion of Avatar Kuruk developed an immediate conviction that Yun was the new incarnation of the Avatar. He trained Yun to become the perfect Avatar, developing the earthbending prodigy’s natural talents into everything he needed to protect the world. But he was wrong. Yun was not the Avatar, and shortly after discovering the truth Yun seemingly died, sacrificed as a tribute to the evil spirit Father Glowworm. That was not the end for Yun, however. He wasn’t destined to restore balance to the world, but he still had his own scores to settle.

Physicals - Durability

• Underwent poison training that allows him to fight off paralytic toxins (source)
• Poison training helps him identify the paralytic (source)
• Battles with Father Glowworm for seemingly days on end, forced to prioritize which parts of his body he can sacrifice over the course of the fight (source)
• Breaks out of a grapple and narrowly escapes the full force of a fireblast, then escapes in spite of serious injury to his arm (source)
• Shrugs off a jet-powered tackle from Kyoshi and continues dodging and defending from her and Rangi (source)

Physicals - Speed

• Earthbends a defense right before a sword decapitates him (source)
• Dodges around several of Kyoshi’s strikes while weaving through hostages, though Kyoshi was hesitant to hurt Yun at the time (source) (https://imgur.com/a/kQsPJbg)
• Evades Kyoshi’s rapid fire attacks while delivering attacks of his own and then disappears (source)
• Dodges and blocks repeated attacks and ambushes from the Flying Opera Company in quick succession (source)
• Narrowly raises a wall as a defense from an unexpected attack and then tunnels to evade it when the wall fails (source)

Physicals - Misc

• Parkours off a rooftop and engages in strenuous exercises executed almost perfectly (source)

Earthbending - Utility

• Catches a clay jar that fell from the sky; the container is so heavy it would take two grown men to lift it (source) (https://i.imgur.com/Lpj2wOw.jpg)
• Deftly spells out written messages to communicate, something nobody else was known to do (source)
• Performed both of the above feats while standing far away on a rooftop (source)
• Turns marble into chalk in his hands and simulates firebending with the dust (source)
• Bent salt around a field of crops to spell out a message in dying plants (source)

Earthbending - Power

• Jianzhu refers to him as one of the strongest earthbenders of his generation (source)
• As Kyoshi and Jianzhu’s earthbending struggle against each other Yun locks them together, plucks a pebble from between their influence, and passes it through Jianzhu’s torso to execute him; Kyoshi and Jianzhu were both recovering from poison during this struggle (source) (https://i.imgur.com/BzRFGEp.jpg)
• Lifts and drops a building Kyoshi struggles to keep together; this was a 3 story building described as large (source) (https://imgur.com/a/OZSPnHa)
• Parts a grove to leave Father Glowworm without cover, then seizes him in a vice of earth that crushes him (source)
• Sends waves through the ground around him to throw several people off balance, inflicting so much damage to the surrounding structures that a house topples over, even while launching other attacks (source)

Earthbending - Offense

• Sinks a party of people into the ground ankle-deep to hold them hostage, then sinks a woman down to her waist (source)
• Collects the paint from a hallway of portraits and explodes it against the ground, tearing apart Kyoshi’s chainmail armor while killing and injuring several men in ceremonial armor (source) (https://imgur.com/a/1cdN5Uv)
• Instinctually fires a focused blast of mud and loosened rocks that lashes Father Glowworm (source)
• Battles Father Glowworm with columns of solid stone, sprays of pebble, and a giant hand of mud (source)
• Forms several game tiles into a spike he stabs through his opponent’s neck (source)
• Flattens ceramic cups into sharp edges and slashes them across a fleeing man’s back, knocking him out (source)
• Raises a massive stone column and fires bullets off it that tear through a plaster wall while evading Kyoshi’s own projectiles (source)
• Sprouts a spike out of a wall from behind a painting and rearranges bricks into a wall (source)
• Liquifies a stone floor and washes it over Kyoshi, re-solidifying it to trap her in place (source)
• While sending waves through the earth Yun fires out spears of stone that severely injure an Air Nomad and his sky bison flying overhead (source)
• Sinks 2 benders into pitfalls and closes the earth to break their legs, then localizes an earthquake to throw Rangi & Kyoshi off balance as he pelts them with clay discs (source)

Earthbending - Defense/Evasion

• Turns an inkslab into a glove that blocks a blade swung at him (source)
• Dives into the ground and seals up the hole behind him with loose soil (source)
• Skates away from an attack on a wave of earth, raises a defense he then counterattacks with that gouges a trench into a roof, and dissipates every earthbending attack directed at him with little effort (source)
• Rides a swell of earth to evade a powerful continuous blast of fire from Rangi (source)
• Tunnels into the ground and then raises on a spout of earth behind Rangi to impale her on a spike of earth (source)

Earthbending - Senses

• Can sense others around him through the ground (source)
• Feels connected to the earth at all times, believing it to be basic earthbending, and trains without that connection atop caltrops (source)
• Senses Rangi about to enter the room he is in (source)
• Senses several guards approaching the garden he stands in (source)
• Estimates the integrity of brickwork and senses the shape of a well (source)
• Nearly ambushed by benders attacking from the air since he could not sense their approach (source)

Intelligence/Skill

• Capably strategizes with Jianzhu on global politics, earning praise (source)
• Wins at Pai Sho even while grabbing at pieces randomly, emulating Avatar Kuruk’s line of play so precisely the odds are considered unfathomable (source)
• Defeats 3 men at Pai Sho simultaneously in 3 different ways (source)
• Identifies the certainty of his victory in Pai Sho 18 moves ahead of its completion (source)
• A trained assassin, spy, and sower of chaos proficient in killing with poison, blades, and his bare hands who successfully infiltrated the Fire Nation capital while foiling the security force of the royal palace (source)