Panchmukhi Hanuman

Kamba Ramayanam (or Ramavataram), the great tamil epic in tamil language, written by Maharishi Kambar (or Kamber or Kamban) during 12th century based on Maharishi Valmiki's Ramayan (which is originally in sansktrit), the significance of number five in five faced Lord Panchmukhi Hanuman is beautifully narrated as follows:-
(1) The son of one of the five elements_वायु (Son of Wind God – Pawan Tanay),
(2) Crossed one of the five elements_जल (Water – The Ocean),
(3) Through one of the five elements_आकाश (Sky),
(4) Meet daughter of one of the five elements_पृथ्वी (Daughter of Earth – Sita Devi),
(5) Burnt-out Lanka by one of the five elements_अग्नि (Fire).