He's seen in several photos (5)
I believe the answer is:
ralph
'he's' is the definition.
'in several photos' is the wordplay.
'in' indicates the answer is hidden within the clue.
'RALPH' is hidden within 'several photos'.
'seen' acts as a link.
(Other definitions for ralph that I've seen before include "N Waldo Emerson, nineteenth century US poet" , "--- Waldo Emerson, US writer" , "Fellow's name" , "- Vaughan Williams, English composer" , "___ Fiennes, English actor, b. 1962" .)