Cartoon spinach eater (6)
I believe the answer is:
popeye
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cartoon spinach eater</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for popeye that I've seen before include "Spinach-eating cartoon character" , "Spinach and Olive Oyl lover" , "Bluto's rival" , "Old cartoon sailor" , "Spinach-eating sailor" .)