Welling will play police lieutenant Marcus Pierce, who will be a potential love interest for Chloe Decker (Lauren German).
It marks the first network TV role for Welling since the end of Smallville, in which he famously portrayed Clark Kent.
The first look at former Smallville star Tom Welling as Lucifer’s new guest star is here.
Welling has already been announced as the newest major addition to the Lucifer cast, but scant details were revealed about his character or how he appears.