Although the Guardians of the Galaxy have spent years acting as the Marvel Universe's foremost cosmic heroes, they have had plenty of opportunities to question their own reputation along the way. In fact, the heartbreaking truth of how one of their own became a world consuming monster is the latest misstep to make the Guardians wonder whether they are doing more harm than good. Of course, the fact they're asking that question at all is just another sign how heroic they truly are. Similarly, their willingness to sacrifice themselves to make up for their failures proves it.
Source：https://www.cbr.com/grootfall-guardians-of-the-galaxy-best-marvel-heroes/
