Jeremiah Valeska is sitting on top of the world. After all, he got what he wanted in the Gotham Season 4 finale when he isolated the beleaguered city from the rest of the world, triggering Season 5's "No Man's Land" storyline. These days, he's spending some time with his girlfriend and enjoying himself. However, there's one thing bothering him: his relationship with Bruce Wayne.

During a visit to the Gotham set in October, star Cameron Monaghan explained to CBR his character's obsession with Bruce Wayne, and teased how Jeremiah's success in the Season 4 finale will impact him in the final season.

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CBR: What is Jeremiah's role in "No Man's Land"?

Cameron Monaghan: You know, when we come back to the season, we're not seeing a lot of him initially and he's operating more as this boogeyman within the shadows and he's pretty frightening because of it, but -- you know -- I will say that, because he has succeeded in his goal, he's gaining these weird complexes. He's enjoying himself a lot and he's becoming a bit more heightened and joyful because of it. He's gaining this weird ego and hubris and it's this hubris that's causing him to slip away a bit in his stability and sanity because of it. You know, he's got a girlfriend now, and he's more accomplished than he was before, but he has one thing that he didn't succeed at, and that is his relationship with Bruce.

Because Jeremiah is such an obsessive personality, it's this relationship that's driving him and he's building this very, very elaborate plan to try to turn Bruce into his way of thinking. I think he's doing it because he has this weird, twisted love for him. He has this strange admiration, and I think it's Jeremiah's last handhold into humanity and vulnerability is his relationship with Bruce. So that's what we're really exploring and pushing with this season, and it's really fun to be able to make him more heightened because of it.

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How is Jeremiah's dynamic with Bruce going to evolve?

He's continuing to do what he did in the last season, in that he's attacking him in extremely personal ways. You know, he wants to connect himself to Bruce and Bruce's history and his life, so he's going to be targeting things within what Bruce cares about to get to him, essentially.

Airing Thursdays at 8 p.m. ET/PT on Fox, Gotham stars Ben McKenzie as James Gordon, Donal Logue as Harvey Bullock, David Mazouz as Bruce Wayne, Robin Lord Taylor as Penguin, Camren Bicondova as Selina Kyle, Erin Richards as Barbara Kean and Sean Pertwee as Alfred Pennyworth. The fifth and final season is scheduled to premiere on January 3.