The most common and most likely answer to this crossword clue is the 7 letter word GAMBITS
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More clues leading to the result GAMBITS
Buddy explains!

The straight part
We know that "New hero" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case new hero = gambits.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GAMBITS mean?
GAMBITS noun- An opening in chess, in which a minor piece or a pawn is sacrificed to gain an advantage.
- Any ploy or stratagem.
- A remark intended to open a conversation.