It is also interesting to raise this question.
You can of course think of superheroes to discuss this question for example, or fairy tales characters if you prefer.
Show the difference in the relationship between children and heroes and later on, adults and heroes. Are there real differences ? What are they, according to you ?
To go further along the subject of superheroes, you can watch this video :
An interesting text in your manuel about how adults view superheroes when they grow up p. 25 (p25).