In Tantric Buddhist art it is common for semi-wrathful and wrathful deities to stand or trample upon smaller figures. The smaller figures generally represent ego, or the four skandhas of Buddhist philosophy.
Several sculpture, part of a larger work, have recently been identified as likely belonging to a depiction of Vajrabhairava. The semi-prone figures represent Hindu gods that are subjugated or trampled by the standing Vajrabhairava. (See images below).