Kiefer Sutherland chose not to reprise his role as Jack Bauer in order to star in the series Designated Survivor (2016).
Tony Almeida (Carlos Bernard) is the only character from the original series to appear. Although Mariana is the cousin of the late Edgar Stiles, she was never mentioned in the first series.
Despite having a lot of different references to the original "24" series, such as names and events, the name Jack Bauer is not mentioned.
This is the first edition of 24 to not feature the acting President of the United States in any way since Season 1 of the original series.
Gerald McRaney plays the father of Jimmy Smits. In reality, McRaney is only 8 years older than Smits.