Xbalanque is the second of the Hero Twins of the Popol Vuh, the brother of Hunahpu, and one of the two young heroes at the centre of the Kiche Maya sacred narrative. His name carries the jaguar, the element balam meaning jaguar, tying him to the night, to the underworld, and to the sun in its passage beneath the earth from sunset to sunrise; he is often understood as the darker, nocturnal complement to his brother, and in one common interpretation the twins become the sun and the moon (or the day-sun and the night-sun) at the end of their story. In the Popol Vuh the two are almost inseparable and act nearly always as a pair, matching their wits against the lords of Xibalba, the underworld.
Summoned below to answer for the noise of their ballplaying, as their father and uncle had been before them, the twins survive the deadly houses of trial, of darkness, cold, jaguars, fire and bats, through cleverness rather than strength, and by a series of tricks and self-transformations they outwit and destroy the lords of death: in the climactic deception the twins allow themselves to be killed and ground up and thrown into a river, only to return in disguise as wandering performers who dazzle the lords with a marvellous trick of killing and resurrecting, until the lords beg to undergo it themselves and are killed without being brought back. Having defeated death, the twins raise up their father, the maize god, and ascend into the sky. Xbalanque, the jaguar-twin of the night, embodies the Maya conviction that death itself can be overcome by wit and courage, and that life rises again out of the underworld as surely as the sun climbs each dawn from beneath the earth.