Very important person (5)
I believe the answer is:
titan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">very important person</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 titan that I've seen before include "Old giant" , "A son of Uranus and Gaea" , "Mythological giant" , "distant moon" , "Atlas, say" .)