To gauge a larger audience, Hollywood may alter comic book properties, to rectify more unusual traits of the prominent superheroes we all love, and know today.
This could vary from slight changes of best known characters, or complete re-hauls; as seen when director James Gunn reinvigorated the Gaurdians Of The Galaxy franchise. Wanted, or otherwise, it's fascinating to observe what Marvel, and DC deemed suitable for reinvention from the source material.
Depending on the reception the films get, the modifications made can seep back into the comics, and inspire future issues, and graphic runs more than the material proceeding it. Hence why some characters suddenly appear more charming, or gruff despite never having an arc inciting such a change.
In some instances the heroes can change physically; adorning a realistic costume worn by their live action counterpart. Or even their origin, all in the favour of making them that more badass.
However, the dicing out of the characters' original concepts can be throwing away treasure. Granting yourself bountiful, and the wiser, when encountering how unrecognisable your favourite superhero has become, after what they were like in the good old comic book pages...