SB 9.10.18
raksah-patis tad avalokya nikumbha-kumbha-
dhumraksa-durmukha-surantaka-narantakadin
putram prahastam atikaya-vikampanadin
sarvanugan samahinod atha kumbhakarnam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
When Ravana, the master of the Raksasas, saw the disturbances created by the monkey soldiers, he called for Nikumbha, Kumbha, Dhumraksa, Durmukha, Surantaka, Narantaka and other Raksasas and also his son Indrajit. Thereafter he called for Prahasta, Atikaya, Vikampana and finally Kumbhakarna. Then he induced all his followers to fight against the enemies.