Charles Keefe is the United States Deputy Secretary of Homeland Security and the intended target of the terrorist assassination plot. He and his family are staying at Lisa's hotel, where a missile is aimed at their suite. After Lisa and Cynthia save them, he praises both women for preventing the attack.
Rival archaeologist and black-market treasure hunter who frequently clashes with Nicole. Orchestrates sabotage and bribery to steal the expedition's coordinates, leads a hostile attack at the dive site, and is ultimately killed by the kraken during the confrontation.
Rossi's best friend and co-manager of the Manhattan exotic dancer agency. Initially suspects rival promoter Lou Goldstein of the attacks. Later negotiates a security and transportation agreement with Goldstein to protect their clients. He is severely injured while fending off the serial killer alongside his girlfriend Ruby.
The sitting president who is assassinated during a motorcade stop. His extramarital affair is revealed to be the primary motive for the conspiracy orchestrated by his wife.
Wick Hayes is the designer of the experimental submarine Siren II. He believes that modifications made by the Contek corporation compromised his original design, making him a critical technical voice in the mission to investigate the missing Siren I. He works alongside Captain Phillips and the NATO crew.
Nicholas 'Nick' Saxon is the central protagonist, a former special-forces survivor summoned to oversee the recovery of the Aquarius crew. He confronts the infected astronauts, discovers the alien threat inside Deborah, his ex-wife, and joins her struggle against the Dark Breed despite being branded a traitor by Cutter.
Michael is a private investigator assigned to Lissa. His investigation reveals that Gregg is cheating on her, and he later escorts Lissa home when she is bothered by a man. He and Lissa become romantically involved, and after Nikki’s kidnapping he catches the kidnapper and locates her.
LAPD lieutenant who teams up with loyal cybernaut Cain to hunt down and destroy the renegade T-Force members after their killing rampage.
Henry is a multi-millionaire American businessman and the father of Tommy and Ethel. He sends his children to Ireland to spend the summer with Laura Duvann, his fiancée. The children take their father's side as they work to protect Finn from Laura and her estate company.
A firefighter suffering from similar alcohol problems who meets Paula during their time in rehabilitation. He becomes a potential romantic interest and support figure as Paula works on her recovery and attempts to mend her relationship with her daughter.
Nick is the owner of the island resort where Shannon and Marla take their honeymoon trip. A former astronaut who now lives on the island, he meets Marla during the stay, and she is attracted to him. His connection with Marla forms a secondary thread alongside the mother-daughter relationship at the center of the story.
Jack Scalia has 65 screen credits in a career dating back to 1978. Signature works include Red Eye, Beyond Suspicion, Jersey Shore Shark Attack. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
Related entry on Wikidata (Q1386159), public domain (CC0).
