Zane Zaminski (played by Charlie Sheen) is a protagonist in The Arrival.
Radio astronomer turned satellite installer, uncovers alien conspiracy. Ilana Green (played by Lindsay Crouse) is a protagonist in The Arrival.
Climatologist investigating global warming linked to aliens. Calvin (played by Richard Schiff) appears in The Arrival.
Zane's colleague at SETI, murdered by aliens. Gordian (played by Ron Silver) appears in The Arrival.
Zane's supervisor who covers up the alien signal. Char (played by Teri Polo) appears in The Arrival.
Zane's girlfriend, struggles with his obsession. Mrs. Roosevelt (played by Phyllis Applegate) appears in The Arrival.
Character interacting with protagonists. Kiki (played by Tony T. Johnson) appears in The Arrival.
Young neighbor assisting Zane with his telescope. DOD #2 (played by Buddy Joe Hooker) appears in The Arrival.
Department of Defense agent.