Well, first, amazing stuff you showed so far. Everything looks great and I really enjoy your work. Everything in it is awesome, story, graphics, and rarely I see something bad.
About a possible suggestion, I think, since it's a magnetic/technologic-like prison, I can suggest using an FG from Mega Man X, since it has lots of techno-themed stuff (like this) and about the BG the concept could be the same. Since it's a prison, it would be cool something that makes it creepy/abandoned (like this or this).
I really hope to see more works from you. Keep going!
About a possible suggestion, I think, since it's a magnetic/technologic-like prison, I can suggest using an FG from Mega Man X, since it has lots of techno-themed stuff (like this) and about the BG the concept could be the same. Since it's a prison, it would be cool something that makes it creepy/abandoned (like this or this).
I really hope to see more works from you. Keep going!