Younger twin of Hun Hunahpu; co-victim of the Xibalba executions. Vucub Hunahpu has no independent issue and no posthumous resurrection-as-Maize-God: he is the structural twin-shadow of Hun Hunahpu, present in narrative paired-emphasis but without separate dynastic or cultic afterlife. The K'iche' calendar-pairing 1-Ahau / 7-Ahau (Hun Hunahpu / Vucub Hunahpu) encodes a specific Tzolkin numerical complement: in the 260-day count the days 1-Ahau and 7-Ahau are 240 days apart, framing the agricultural year. Iconographically there is no separate Classic-period Maize God reflex of Vucub Hunahpu: he subsides into his elder twin's solar-resurrection profile in the post-Xibalba narrative, while Hun Hunahpu becomes the Maize God Hun Nal Ye. He is included here for completeness of the genealogical structure (he is named pantheon-tier offspring of Xpiacoc and Xmucane) and because he is invoked alongside Hun Hunahpu in the K'iche' day-keeper memorial-prayers preserved in 20th-century ethnography.