In a powerful statement, one of Lucifer's stars Lesley-Ann Brandt shared the difficulties she's had with her preganancy and health and her eventual decision to have an aborition.
In 'Lucifer' Season 3 episode 15, Lucifer and Chloe go undercover at a high school reunion to investigate the death of an author. The episode is called 'High School Poppycock.'
'Lucifer' Season 3 episode 13 alluded to Tom Welling's days as Clark Kent in 'Smallville.' Lucifer mentioned the word 'kryptonite' in a conversation with Marcus Pierce.