The Runaway is indeed a Marvel comic. It features elements and themes commonly associated with Marvel's comic book style and world-building. The characters and their adventures are integrated into the larger Marvel narrative framework.
It's hard to tell. Without more information about Runaway 34, it's difficult to determine if it's based on real events. Maybe you could provide more details?
Well, 'httyd runaway fanfic' could be about a character from How to Train Your Dragon (HTTYD) going on a runaway adventure. Maybe a dragon or a human character decides to run away from their home or a difficult situation in the HTTYD universe.
Courage is a key element. In the case of runaway slaves, they had to be brave enough to leave the only life they knew, facing the unknown and the very real threat of being caught. For example, Harriet Tubman was fearless in leading others to freedom.