Urvashi was considered to be the most beautiful of them all, even more so than Rambha, the queen of the Apsaras. Menaka was sent by Indra to seduce the sage Vishvamitra, while Tilottama is responsible for cracking open a can of whoop ass on two Asura whom attempted world domination, Sunda and Upasunda. (Or rather, causing them to beat the shit out of each other to see who got dibs)