Chi-Yu (Japanese: イーユイ Yiyui) is a dual-type Dark/Fire Legendary Pokémon introduced in Generation IX. Chi-Yu is a fish-like Pokémon. It is composed of two pairs of curved jade beads, once believed to be sacred and commonly worn for religious rituals. Each of these pairs of beads circle a black orb coated by white around the sides; together, they make up the eyes of Chi-Yu, while the rest of its fish-shaped body is formed by a dark red and yellow flame. Its eyes and beads sometimes glow red and yellow when it attacks. Like the other treasures of ruin, Chi-Yu's true form is the beads forming its eyes, having been given life by the envy of those who desired them enough to start wars over them — while its body is a form it has constructed using its control over fire. Chi-Yu's flames burn at over 5,400 degrees Fahrenheit (3,000 degrees Celsius), allowing it to melt rock and sand into lava that it can swim through. It is known as the "Beads of Ruin".
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