What goes up must come down. That's the natural law, be it in fiction or reality. That was true for the iconic Marvel Cinematic Universe (MCU) character Iron Man, which Robert Downey Jr.

With Thunderbolts* underperforming in the box office, the audience seems to have lost their faith in the once unstoppable Marvel juggernaut.

And while the seeds were planted in the late 2000s, the 2010s were when the MCU was in full gloom. From Phases One through ...