Alien Siege

A U.S. Army Major General who shifts from opposition to an indispensable ally of the resistance, coordinating ground forces to defend Earth against the Kulku invasion.

A Kulku officer who remains sympathetic to humanity but torn between his species' survival and the costs of aiding Earth. He plays a pivotal role in halting the resistance's plan and ultimately sacrifices himself for his people.

Dr. Stephen Chase's daughter who is chosen in the Kulku lottery. She is captured and later becomes crucial to the conflict when her blood demonstrates the potential to cure a Kulku, becoming a focal point of the struggle.

A scientist and Heather's father who joins the human resistance, designs a weapon to counter the Raeg, and leads efforts to rescue Heather from the Kulku mothership.

The Kulku ambassador who intends to send Heather to Kulku and plans to unleash the Raeg weapon, aiming to destroy Earth so Heather can reach the Kulku homeworld alive.

A member of the human resistance who endures the battle's perils and ultimately fires the counterweapon to destroy the Raeg, aiding in Earth's defense.

A member of the cast who appears in the resistance ranks; his exact role is not detailed in the summary but he participates in the broader effort against the Kulku.

A Kulku figure who participates in the broader confrontation; his presence indicates the Kulku's internal hierarchy during the conflict.

A political leader whose role frames the governmental scale of response to the invasion and mobilizes national efforts alongside the military and resistance.