There are two Catur-vyuhas expanding from Krsna. In Hyderabad Srila Prabhupada alluded to them. He said: “So He’s the origin of Brahma, Visnu, Mahesvara. From Krsna, for material creation, there are three Purusas. First of all, three purusas. Not directly from Krsna. From Krsna, Baladeva. From Baladeva, catur-vyuha: Sankarsana, Vasudeva, Sankarsanaa, Pradyumna, Aniruddha. Then from Sankarsana, Sankarsana, Narayana. Then second catur-vyuha. From the second catur-vyuha, Sankarsana, the purusa-avataras. Three purusa-avataras, three Visnus: Karanodakasayi, Garbhodakasyi, and Ksirodakasayi Visnu. So the, in the Vedic literature all these informations are there.”
The Process of Creation