According to the Kalki Purana, the twin brothers Koka and Vikoka serve as generals under the demon Kali (not the Goddess), overlord of Kali Yuga.
See also
- Koka
- The names and deeds of these demon brothers are comparable to the Gog and Magog of the Hebrew bible and Christian Lore and the Ya'jooj Wa Ma'jooj (يأجوج و مأجوج) of Muslim Lore.
Source
- Kalki Purana ISBN 81-288-0588-6