Kalakamukha

A rakshasa who was the brother of Ravana’s minister Prahasta. He was with Khara-Dushana during Rama’s exile period. The others were Shyenagami, Pridhugriva, Yajnashatru, Vihangama, Durjaya, Karaviraksha, Parusha, Meghamali, Mahamali, Sarpasya, Rudhirashana, as per Ramayana Aranyakanda Sarga 26.