Well, it depends. Some stories have a lasting impact and seem permanent, but in a changing world, their meanings and relevance can shift. Also, new stories constantly come along to replace or modify the old ones.
Unstoppables comics are typically not permanent. Their longevity depends on many elements such as reader demand, the publisher's strategy, and the ability to maintain the quality and relevance of the content. So, it's hard to say for sure if they'll always be around.
I'm not sure specifically as I haven't read it. But generally, a novel titled 'the gauntlet' might be about a challenging journey or a series of difficult tests that the characters have to face.