He's complete. So many incarnations are coming from Him, just like the waves of the river; still, he's complete. Pūrṇasya pūrṇam. From original Kṛṣṇa so many incarnations are coming. But still, He's there.
In the Brahma-saṁhitā it is stated that goloka eva nivasaty akhilātma-bhūtaḥ (Bs. 5.37). Kṛṣṇa lives at His home, Goloka Vṛndāvana. Just like Kṛṣṇa is in Goloka Vṛndāvana. So still, He emanates, He expands Himself. Akhilātma-bhūtaḥ. Akhilātma-bhūtaḥ means throughout the whole creation. He has creation; that is also innumerable. We are seeing this creation, this universe. There are innumerable planets. But... Akhilātma-bhūtaḥ (Bs. 5.37), in everywhere Kṛṣṇa is there. Still, He is existing in His own abode. We cannot imagine because we have no such experience. Just like we are sitting in this room. We are not sitting in the other room. Try to understand the distinction between Kṛṣṇa and ourselves. But Kṛṣṇa is here and He's not only in the other room, other building, other city, other universe—everywhere.