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)
Deadpool 9.5 | Batman v Superman: Ultimate Edition 7.0 | Captain America: Civil War 10.0 | X-Men: Apocalypse 7.5 | Suicide Squad X.X | Doctor Strange X.X
Tradition is just dead people's baggage.