This is the only episode of the season to feature the entire main cast.
This is the last appearance of Aaron Ashmore as Jimmy Olsen and Sam Witwer as Davis Bloom as series regulars.
This is the last time Clark has been seen wearing red and blue colors in his casual clothing.
At the end of this episode Chloe gives a young boy Jimmy's camera and explains he might follow in his brothers footsteps, this may be an allusion to a younger Jimmy Olson due to the age difference of Jimmy, Clark, and Lois in the comics, movies, and cartoon series.
The fight between Green Arrow, Impluse, Black Canary and Doomsday takes place on the same set as the 1999 shark movie Deep Blue Sea.