Dave Register plays Chet in Prime Video’s Fallout. This guide focuses on the performance, the character’s story, and the episodes in which the role appears, with spoilers clearly separated from the introductory material.
Who Dave Register plays in Fallout
Chet is initially part of Lucy’s ordinary Vault 33 life, which makes his later involvement in the vault mystery particularly useful. He does not begin with Norm’s appetite for investigation.
The character page for Chet follows the story itself, while this page stays centered on Dave Register and how the role is presented on screen. Keeping the two pages separate makes it easier to explore the series without forcing an actor biography and a spoiler-heavy character history into the same article.
The performance
Chet is funny because he is recognizably human in a community built around stiff rules and cheerful ceremony. Register keeps the comedy grounded, which gives later suspicions and loyalties more weight.
Chet helps the vault plots stay personal. He is not a grand strategist; he is someone trying to understand family, duty and a community whose history keeps changing under his feet.
Chet across the series
Season 1
Season 1 repeatedly places Chet near the social consequences of the raid and the transfer of residents between Vaults 33 and 32. His family ties keep him close to Lucy and Norm even when their paths diverge.
Season 2
In Season 2, Chet’s relationship with Stephanie and his discovery of evidence about her pre-war identity pull him into the experiment’s deeper history. The wedding storyline turns a domestic subplot into a confrontation about who Stephanie really is.
Dave Register Fallout episode guide
The table below links directly to the episode guides for the appearances tracked by this site. Each episode page has its own recap, cast-and-character links, music list, sources, and previous/next navigation.
| Episode | Title | Release date |
|---|---|---|
| S1E1 | The End | April 10, 2024 |
| S1E3 | The Head | April 10, 2024 |
| S1E4 | The Ghouls | April 10, 2024 |
| S1E5 | The Past | April 10, 2024 |
| S1E7 | The Radio | April 10, 2024 |
| S2E1 | The Innovator | December 16, 2025 |
| S2E4 | The Demon in the Snow | January 7, 2026 |
| S2E6 | The Other Player | January 21, 2026 |
| S2E7 | The Handoff | January 27, 2026 |
| S2E8 | The Strip | February 3, 2026 |
Career beyond Fallout
Register is a stage and screen actor whose Fallout role grew from comic support into a more consequential part of the vault storyline. The series uses Chet’s ordinary concerns to show how institutional secrets affect people who never asked to become investigators.
This section is intentionally concise. Vault-Tec.com’s coverage is designed around the television series, so the strongest internal links point to the role, the episodes and the broader cast guide rather than stretching a series-focused page into an unrelated filmography database.
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Editorial note: episode credits and series details are checked against the linked sources. Page updated August 19, 2026. Quotations are included only when a source supports the wording and attribution.
