Despite its lineup of parasitic extraterrestrials , rival corporations , and jaw-dropping action sequences, Noah Hawley's FX series Alien: Earth is a story about humanity — with a pair of long-lost siblings at its core.

Marcy (Sydney Chandler) and Joe (Alex Lawther) are known, respectively, as Wendy (after the Peter Pan matriarch) and Hermit (for their father's army callsign). The latter is a human, the former a hybrid , who find themselves reconnected through an Ice Age in-joke , then coming face-to-face in the ruins of a crashed Weyland-Yutani spaceship in Prodigy City.

Mashable sat down with Chandler and Lawther to unpack their characters, the major Xenomorph fight in episode 3, and how voice notes helped build their sibling bond.

Sydney Chandler and Alex Lawthe

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