Avenger with a hammer (4)
I believe the answer is:
thor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">avenger with a hammer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for thor that I've seen before include "Norse hammer-wielding god" , "Son of Odin and Freya" , "Norse god for whom Thursday is named" , "Scandinavian thunder-god" , "Scandinavian god of thunder and the weather" .)