Their (the ten million Rudras') associates, the ghosts and goblins, who are very fearful, were born of the other wife of Bhuta

Expressions researched:
"Their associates, the ghosts and goblins, who are very fearful, were born of the other wife of Bhuta"

SB Canto 6

Sarūpā, the wife of Bhūta, gave birth to the ten million Rudras, of whom the eleven principle Rudras were Raivata, Aja, Bhava, Bhīma, Vāma, Ugra, Vṛṣākapi, Ajaikapāt, Ahirbradhna, Bahurūpa and Mahān. Their associates, the ghosts and goblins, who are very fearful, were born of the other wife of Bhūta.

SB 6.6.17-18, Translation and Purport:

Sarūpā, the wife of Bhūta, gave birth to the ten million Rudras, of whom the eleven principle Rudras were Raivata, Aja, Bhava, Bhīma, Vāma, Ugra, Vṛṣākapi, Ajaikapāt, Ahirbradhna, Bahurūpa and Mahān. Their associates, the ghosts and goblins, who are very fearful, were born of the other wife of Bhūta.

Śrīla Viśvanātha Cakravartī Ṭhākura comments that Bhūta had two wives. One of them, Sarūpā, gave birth to the eleven Rudras, and the other wife gave birth to the associates of the Rudras known as the ghosts and hobgoblins.