God needing name for Germanic character (5)
I believe the answer is:
thorn
'germanic character' is the definition.
(historical Germanic letter once used in English)
'god needing name' is the wordplay.
'god' becomes 'thor' (Thor is an example).
'needing' is a charade indicator (letters next to each other).
'name' becomes 'n' (common abbreviation e.g. on forms).
'thor'+'n'='THORN'
'for' is the link.
(Other definitions for thorn that I've seen before include "Letter written long ago" , "It causes irritation and annoyance" , "Sharp point on, eg, rose" , "Woody prickle" , "Spine - prickle - Old English runic letter" .)