The Widescreen Presence of Chet in Vault 33
Chet stands out fast in Vault 33. Dave Register plays him; IMDb lists 6′ 3″, and no official measurement appears.
- Real-World Height: 6′ 3″ (1.91 m), as listed by IMDb. No official production measurement appears.
- Age: 38 years old as of October 9, 2026, born September 16, 1988, in Cape Elizabeth, Maine (per IMDb).
- Alma Mater: Columbia University, School of the Arts, acting class of 2015. A Fordham University degree is reported only on LinkedIn.
- Signature Role: Chet, cousin to Lucy and Norm MacLean and former Vault 33 gatekeeper in Fallout.
Dave Register Height Explained: Feet, Inches, and Screen Illusion
The IMDb listing for Dave Register reads 6′ 3″ (1.91 m), the strongest height figure this article found.
What Height Is Dave Register Actually Listed At?
IMDb’s indexed listing reads 6′ 3″ (1.91 m), a database entry rather than an official measurement. The research notes cite 6′ 2¾″ (1.90 m) from another IMDb version. No source this article reviewed showed that figure, and IMDb’s live page blocks automated checks.
One low-quality biography site lists 5′ 5″, which conflicts with the database figure, so it is excluded.
[Editor: check the live IMDb biography before publication and confirm which figure it shows.]
The Prime Video cast description this article could access names Register as Chet and lists no height.
Dave Register vs. Ella Purnell: The Height Difference
Ella Purnell’s estimated height ranges from about 5′ 3″ (160 cm) to 163 cm, depending on the site. These are published estimates, not studio-confirmed measurements.
If Register’s 6′ 3″ listing holds, the gap is roughly 11 to 12 inches, or about 28 to 31 cm.
Footwear, posture and camera angles can change how tall actors look in single shots.
How Vault 33 Camera Angles Shape Chet’s Screen Presence
No production source this article reviewed describes the camera choices used for Chet, so any framing point here is interpretive. As a visual interpretation, lens choice, distance to other actors and set design can all make a tall actor look taller or shorter.
This article doesn’t analyze specific shots, because no licensed still or episode-level source was reviewed. The discussion of screen framing and camera perspective stays at the level of general film craft.
Beyond the Stature: Dave Register Age, Wiki, and Academic Foundations
Dave Register was born on September 16, 1988, in Cape Elizabeth, Maine, according to IMDb.
Cape Elizabeth Roots and the September 16 Birthday
He was born September 16, 1988, in Cape Elizabeth, Maine, per IMDb and FamousBirthdays. That makes him 38 years old as of October 9, 2026.
A Maine newspaper profile also says he grew up in Cape Elizabeth. No childhood stories, family details or hometown influences appear here, because no source backs them.
From Fordham University to Columbia’s Acting Program
Columbia University is the best-documented school in Register’s training, with an acting class of 2015. Columbia’s arts news calls him a 2015 acting alum, and the Atlantic Theater Company’s bio lists his MFA from Columbia University.
The research notes also cite a Fordham University bachelor’s degree from 2010, in Spanish Language and Literature/Journalism. That claim rests on a LinkedIn profile, and no independent record confirmed it.
Training alone doesn’t explain his casting success, and no source ties either degree to a role.
What the Public Biography Does—and Does Not—Confirm
The sources reviewed confirm his credits and training, but not his parents, siblings, relationships or residence. His birth date and birthplace come from database listings such as IMDb and FamousBirthdays, not civil records.
From Broadway Showcases to Global Streaming Fame
His path runs from the original Broadway cast of Harry Potter and the Cursed Child to a series-regular role as Chet in Fallout.
The Broadway Foundation: Harry Potter and the Cursed Child
Register was in the original Broadway ensemble of Harry Potter and the Cursed Child, which opened on April 22, 2018. Playbill lists him as an ensemble member until March 17, 2019.
The show won the 2018 Tony Award for Best Play. That honor went to the production, not to Register.
The Direct calls this his Broadway debut, but no source confirmed it was his first professional stage role.
The Leopoldstadt Credit: A Replacement Role, Not an Original-Company Claim
Register played Fritz in Tom Stoppard’s Leopoldstadt as a replacement cast member, not an original one. IBDB and Playbill list him in the role from March 14, 2023, in a run that opened on October 2, 2022.
Leopoldstadt won the 2023 Tony Award for Best Play. That award went to the production, not to Register.
Building a Stage Beyond Broadway: Portland Theater Festival
Register is the Founder and Artistic Director of the Portland Theater Festival in Portland, Maine. Columbia’s arts news says he founded it in 2021, while The Direct says he “co-founded” it.
The festival’s sixth season is running in 2026, according to Press Herald and Maine Public. This leadership role is a separate track from his acting work.
From Supporting Screen Roles to the Fallout Breakthrough
Register’s screen career moved from guest roles on TV dramas to a series-regular part in Fallout.
- The Witch Files (2018): Officer Mitchell, per IMDb. Columbia’s arts news dates the show to 2017.
- FBI: A guest role in a 2019 episode. IMDb and TVMaze give different character names, so this article uses neither.
- Madam Secretary (2019 episode): Reed.
- Graves: A guest role in the show’s second season, with no character or episode listed here.
- Heightened (2023): Dusty.
- Fallout (2024 onward): Chet. Season 2 premiered December 17, 2025, and Register appears in five of its eight episodes.
- Dexter: Resurrection (2025): Arik, per TVMaze.
Prime Video’s May 2026 announcement made Register a series regular for Season 3.
Vault 33 Dossier: Common Dave Register Queries
Each answer below uses only the evidence described above, and each one is labeled by source type.
How tall is Chet in Fallout?
Chet is played by Dave Register, whom IMDb lists at 6′ 3″ (1.91 m). That is the actor’s height, not an in-show measurement, and no official production measurement appears.
Is Dave Register really 6 ft 3 in tall?
IMDb’s indexed listing says 6′ 3″ (1.91 m), but that figure hasn’t been checked on the live page. The research notes cite 6′ 2¾″ (1.90 m) instead, and no source this article reviewed showed that version.
How tall is Dave Register compared with Ella Purnell?
If Register is 6′ 3″, he is roughly 11 to 12 inches taller than Ella Purnell. Purnell’s estimated height is listed at about 5′ 3″ (160 cm) to 163 cm, depending on the site. Both are published estimates, not studio measurements.
How old is Dave Register in 2026?
Dave Register is 38 years old as of October 9, 2026. That age rests on a September 16, 1988 birth date listed by IMDb and FamousBirthdays.
Who plays Chet in Fallout, and what is his role in Vault 33?
Dave Register plays Chet, Lucy and Norm MacLean’s cousin and a former Vault 33 gatekeeper. Register has described Chet as a “yes man” who gets into trouble, which is the actor’s own reading rather than a studio description.
The character’s history on the show is separate from the actor’s own biography.
Will Dave Register return as Chet in Fallout Season 3?
Yes. Prime Video’s May 2026 announcement made Register a series regular for Season 3. One report says filming has begun and expects a 2027 release, but no official release date appears in the sources reviewed.
What is Dave Register known for besides Fallout?
He is best known on stage for the original Broadway cast of Harry Potter and the Cursed Child and for playing Fritz in Leopoldstadt. He also founded the Portland Theater Festival in 2021, and his screen work includes Heightened (2023) and a guest role in Dexter: Resurrection (2025).
