Panca-tattva
The Panca-tattva — five inconceivable, simultaneously one and different features of the Supreme Lord's descent in Kali-yuga: Sri Krishna Chaitanya (the Lord Himself, appearing as His own devotee), Sri Nityananda Prabhu (the Lord as guru-tattva), Sri Advaita Acharya (the Lord as devotee-incarnation), Sri Gadadhara Pandit (the Lord's energy) and Sri Srivasa Pandit (the pure devotee). They are worshipped together in the panca-tattva mantra recited before any Gaudiya Vaishnava kirtana.
5 profiles

Sri Chaitanya Mahaprabhu
The Golden Avatar Who Inaugurated the Sankirtana Movement
18 February 1486 (Phalguna Purnima), during a lunar eclipse – 14 June 1534, at the age of 48
18 pastime pages
Sri Nityananda Prabhu
Patita-pavana, the Deliverer of the Fallen
c. 1474, Magha Sukla Trayodashi – c. 1540
9 pastime pages
Sri Advaita Acharya
The Devotee Whose Prayers Called the Lord Down
1434, Magha Sukla Saptami – after 1534
5 pastime pages
Sri Gadadhara Pandit
The Lord's Own Pleasure Potency
c. 1486 – c. 1534, shortly after Mahaprabhu
5 pastime pages
Sri Srivasa Thakura
In Whose Courtyard the Sankirtana Movement Began
c. 1450 – after 1534
4 pastime pages