Tragic hero serves up ideology, being somewhat reflective (7)
I believe the answer is:
oedipus
'tragic hero' is the definition.
(I've seen this before)
'serves up ideology being somewhat reflective' is the wordplay.
'being somewhat' indicates the answer is hidden within the clue.
'reflective' says the letters should be written backwards.
'supideo' is hidden within 'serves up ideology'.
'supideo' backwards is 'OEDIPUS'.
(Other definitions for oedipus that I've seen before include "Theban king of legend" , "complex character" , "person who married his mother" , "Mythological patricide" , "Mythological king who killed his father and married his mother" .)