The most common and most likely answer to this crossword clue is the 6 letter word TINTIN
I've seen this crossword clue in The Guardian
T
I
N
T
I
N
More clues leading to the result TINTIN
- Colour in character in comic
- Reporter of fiction here with gang
- Colour in comic book character
- Highlight popular young hero
- Belgian reporter‘s time at home doubled
- Animated character can box
- Cub reporter from broadsheet in Tinseltown
- Colour in illustrated B
- Use of colour not good for cartoon character
- Comic strip character serving egg on a roll
Buddy explains!

The straight part
We know that "young hero" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case young hero = tintin.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.