As you can see, this look is definitely a lot more monstrous and alien than the character that wound up appearing in the film, not only featuring a much freakier face, but also looking considerably more bulky.
Also, while the film-version is made to look like he’s wearing a helmet, this design seems to suggest that the “horns” are actually a part of his head.
Since the release of Justice League, artist Jerad Marantz has been posting his personal concept art for the movie on his personal Instagram page, and he recently revealed one of the designs he was working on for the villainous Steppenwolf.