Re: Can Metallo character work in a Superman movie ??
Yes. In fact I'd put him in the top 5 potential villains to use after Zod:
(that is assuming Darkseid is reserved for a JL film)
Logan 9.0 | Guardians of the Galaxy Vol. 2 X.X | Wonder Woman X.X | Spider-Man: Homecoming X.X | Thor: Ragnarok X.X | Justice League X.X
Tradition is just dead people's baggage.