Stan Lee is having a very bad luck - he constantly puts himself into dangerous situations. During gameplay, you must rescue him fifty times to finally obtain him as a playable character. In some way he is a kind of collectible, hidden in the hard-accessible areas.
You can help him:
- during main campaign: 15 times + one time between missions (in X-mansion);
- during Deadpool's bonus missions (11);
- on the map of New York city (23)
Rescuing every Stan Lee in Peril is required to beat the game in 100%.