Welling will be playing Marcus Pierce, who is described as an "accomplished police lieutenant" who serves as a foil - as well as a potential love interest - to Chloe Decker (Lauren German), much to Lucifer's (Tom Ellis) chagrin.
"When Decker first meets Marcus Pierce," showrunner Joe Henderson explained, "he is very much someone that rubs her the wrong way, because he's very much a no-nonsense, calling-it-like-it-is guy, and he's not much for social mores, if you will. But what's interesting is he also represents a lot of truth and justice and very much a lot of the things that draw Chloe to the side of law. So Pierce is very much the exact opposite of Lucifer, but also very similar, and so that duality is a big reason for them to start coming together."
According to Welling, the role unintentionally became a much-needed change, after years of playing Clark Kent/Superman on Smallville.
"I definitely didn't want to play Clark Kent again." Welling revealed. "The great thing about Clark is he didn't know who he was and he didn't know what he was supposed to do with what he had and his abilities. This character very much knows what he's capable of and knows what he wants to do and knows how to do it. So as much fun as that is to play, it wasn't necessarily because of Clark that I chose this character. It was so many more factors than just, 'I don't want play Clark again,' but I'd be lying if I was saying that I do not enjoy playing something very different for sure."
Welling seems more than willing to shed his most iconic role, recently explaining that he turned down the opportunity to portray the Man of Steel on The CW's Supergirl. But it sounds like the Lucifer role will mark a new chapter for Welling, as well as many DC Comics fans.
Lucifer returns to FOX on Monday, October 2.
Lucifer is the story of the original fallen angel. Bored and unhappy as the Lord of Hell, Lucifer Morningstar abandoned his throne and retired to Los Angeles, where he has teamed up with LAPD detective Chloe Decker to take down criminals.