when a previous great master became the first Emperor of K'un-Lun, until he was usurped by another master. Much like the mainstream comics, students of the Iron Fist can channel their chi into their hands and feet, encasing them in a supernatural glow that allows them to strike targets with superhuman hardness and impact while protecting them from pain and injury; the Iron Fist can also be used to dispel darkness and heal injuries and poison. Lord Tuan was the previous master of the Iron Fist until he was succeeded by his student Rand-K'ai following his death. The Lowest Caste: a group of outcasts shunned and rejected by the martial arts schools and K'un-Lun society that take in Shang-Chi during his exile. They are loosely based on the Morlocks and the New Mutants. To qualify for the Thirteen Chambers, Shang-Chi represents the group as its great master, also giving them their school name as well. After Shang-Chi's victory, the Lowest Caste are spared from execution and are accepted by K'un-Lun's citizens. Its members include Kitten, Lock, Sarah, Caliban, Rahne and formerly Callisto and Cy. The Red Hand: based on the Hand, it is a martial arts school made up of ninjas skilled in many mystical abilities, including assassination, stealth and acrobatics. Due to its first master sacrificing her life to protect her lover, Quan Yaozu, master of the Iron Fist and first Emperor of K'un-Lun, the Red Hand devotes itself to the throne, regardless of whoever sits on it, and refuses to participate in the Thirteen Chambers. The school is led by Red Sai, whose master is based on the Kingpin. A character resembling Nightcrawler is shown as a member as well. The Panther Clan: A martial arts school whose members are inspired by and have similar superhuman abilities to the Black Panther. They are led by T'Challa, whose master is based on T'Chaka. The House of the Jade Tiger: A martial arts school whose members are inspired by and have similar superhuman abilities to the White Tiger. They are led by Ava, who succeeded her brother Hector as its master. The Halls of Atlantis: A martial arts school inspired by the Atlanteans from the mainstream continuity whose members can breathe and become stronger underwater. They are led by Lord Namor and include Namorita as a member. The Spider Cult: A martial arts school inspired by characters associated with Spider-Man