brahma ceti navoditah
catvarah—four principal protectors; vasudeva-adyah—Vasudeva, Sankarsana, Pradyumna and Aniruddha; narayana—including Lord Narayana; nrsimhakau—as well as Lord Nrsimha; hayagrivah—Lord Hayagriva; mahakrodah—Lord Varaha; brahma—Lord Brahma; ca—also; iti—thus; nava-uditah—nine personalities.
" 'The nine personalities mentioned are Vasudeva, Sankarsana, Pradyumna, Aniruddha, Narayana, Nrsimha, Hayagriva, Varaha and Brahma.'
This verse is found in the Laghu-bhagavatamrta (1.451). The Brahma mentioned herein is not a living entity. Sometimes, when there is a scarcity of living entities to take charge of Brahma's post, Maha-Visnu expands Himself as Lord Brahma. This Brahma is not considered to be a living entity; He is an expansion of Visnu.
Link to this page: https://prabhupadabooks.com/cc/madhya/20/242