Rodan's roar was modified from Godzilla's roars, and would later be itself modified for several other monsters throughout the Showa and Heisei series.
Links:
https://www.youtube.com/watch?v=bO-dCX26PXs
Rodan Roars (1956) has been suggested to play 3 roles. Click below to see other actors suggested for each role, and vote for who you think would play the role best.
