"The Avengers" character (5)
I believe the answer is:
steed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the avengers character</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for steed that I've seen before include "Powerful horse" , "Horse, mount" , "Warhorse" , "Trusty horse" , "Literary term for horse" .)