Lois' cellular phone ringtone is Reveille, typically used to wake soldiers up at sunrise.
In the comics, Lois does indeed have a sister named Lucy, who works as a flight attendant and has an on-again, off-again relationship with Jimmy Olsen.
The actress Peyton List will go on to star in two other DC Comics show 'The Flash' as Lisa Snart, again playing the daughter of Michael Ironside's character, and as Poison Ivy in 'Gotham,' an origin story series for Batman/Bruce Wayne.
Lucy Lane is the 20th DC Comics character to be adapted into the series.
Peter Wingfield's character is supposedly a bouncer from a German nightclub named "Kronos". Kronos is also the name of a popular villain from Highlander the TV series in which actor Peter Wingfield played a popular anti-hero Methos. Kronos along with Peter Wingfield's character were two of "The Four Horsemen". Kronos represented "War" and Methos represented "Death".