HBO Harry Potter TV Series Casts Lenny Rush as Dobby for Season 2: Everything We Know
I’ve been waiting for this show since the day it was announced, and I’ll admit something: I was bracing myself for disappointment the moment I saw ‘Season 2 casting news’ pop up in my feed. Chamber of Secrets casting this early? Before Season 1 has even aired a single frame? My gut said ‘too soon.’ Then I saw the name Lenny Rush attached to Dobby, and I actually put my phone down for a second.
If you don’t follow British television religiously, that name might not mean much yet. It will. And the fact that HBO reached for him specifically, instead of just slotting in ‘generic voiceover actor #4,’ tells me more about where this series is headed than any trailer could.
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Wait, Who’s Playing Dobby Now?
Here’s the headline: HBO has cast Lenny Rush, the 17-year-old BAFTA-winning actor, as Dobby for Season 2 of its Harry Potter television adaptation, which will cover Harry Potter and the Chamber of Secrets. Season 1 is locked in for a December 25, 2026 premiere, but the network is already deep into planning the follow-up, and this casting reveal came bundled with two more announcements:
- Billy Barratt steps in as the teenage Tom Riddle
- Bonnie Hill takes over as Ginny Weasley, replacing Gracie Cochrane, who exited the role after appearing in Season 1
Three names, one press release, and an entire fandom immediately losing its collective mind on Reddit and X. As someone who has refreshed r/HarryPotterOnHBO more times than I’d like to admit, I can confirm: the discourse has been loud.
Why This Casting Actually Matters (And Isn’t Just Hype)
Let’s be real for a second — Dobby was never ‘cast’ in the traditional sense back in 2002. He was a fully CGI creation. Toby Jones, already in his mid-thirties at the time, recorded the voice in a booth, completely divorced from the physical performance. There was no actor on set feeding energy back to Daniel Radcliffe in real time. It was all built in post.
So the idea of a living, breathing teenage actor stepping into the role isn’t just a fun casting quirk — it’s a philosophical statement about what this show wants to be. HBO isn’t remaking the movies. It’s building something that treats its magical creatures as characters, not special-effects line items.
And Rush is exactly the kind of performer who can pull that off. At just 14, he won a BAFTA for Best Male Comedy Performance for his role in Am I Being Unreasonable? opposite Daisy May Cooper — a performance that balanced razor-sharp comic timing with genuine emotional weight. He followed that up with a role in Doctor Who as Morris Gibbons in 2024. This isn’t a kid getting his first big break; this is a proven talent HBO specifically went after.
His reaction to the news was, honestly, the most charming part of this whole story. He posted an old photo of himself as a little kid sipping Butterbeer on the Warner Bros. Studio Tour, joking that his younger self would never have believed he’d end up in the franchise instead of just visiting it. If that doesn’t melt even the most jaded Potter fan’s heart a little, I don’t know what will.
So… How Are They Actually Building Dobby?
This is the part keeping me up at night, in the best way. HBO and Warner Bros. Television haven’t confirmed the technical approach yet — no word on whether we’re getting:
| Approach | What It Would Mean |
|---|---|
| Motion capture | Rush performs on set alongside Dominic McLaughlin’s Harry in real time, then Dobby is rendered digitally over the performance |
| Practical prosthetics/animatronics | A more grounded, tactile creature built physically, leaning on Rowling’s original descriptions |
| Hybrid approach | Some blend of both, depending on the scene |
VFX forums are leaning toward motion capture as the most likely route, since it would let Rush and McLaughlin actually act at each other instead of one performer talking to a tennis ball on a stick. And honestly? That’s the dream scenario. Some of Dobby’s most gut-wrenching moments in the books depend entirely on eye contact and physical proximity to Harry. Give me that in-the-room chemistry over disconnected post-production voicework any day.
The Rest of the Chamber of Secrets Puzzle
Rush isn’t walking into this alone. Billy Barratt — the youngest-ever International Emmy winner for Best Actor, earned at just 13 for Responsible Child — is stepping into teenage Tom Riddle’s shoes. He’s a much closer age-match to the character than Christian Coulson was back in 2002, when Coulson played a supposedly 16-year-old Riddle at the age of 23. That kind of age accuracy might sound like a small detail, but for a show explicitly built to track these characters growing up in near-real-time, it’s actually a core part of the production strategy.
Then there’s Bonnie Hill, best known from Girl Troop versus Aliens, taking over as Ginny Weasley after Gracie Cochrane’s exit from the production. Ginny becomes a much bigger presence starting in Chamber of Secrets, so this recast carries real narrative weight going forward.
All of this slots into an already stacked ensemble:
- Dominic McLaughlin, Alastair Stout, and Arabella Stanton as the core trio
- John Lithgow as Dumbledore
- Paapa Essiedu as Snape
- Janet McTeer as McGonagall
- Nick Frost closing in on a deal to play Hagrid
- Kit Harington as Gilderoy Lockhart
- Johnny Flynn as Lucius Malfoy, Lox Pratt as Draco
That’s a genuinely intimidating lineup on paper.
Why HBO Is Moving This Fast
I get why some fans are side-eyeing the whole ‘casting Season 2 before Season 1 even airs’ move, but there’s a practical reason behind it. Child actors age. Fast. If HBO wants Dominic McLaughlin and company to stay believable as their book-accurate ages across seven planned seasons, they can’t afford long gaps between productions the way the original film series occasionally did. Showrunner Francesca Gardiner (yes, of Succession fame) is staying on, with Jon Brown now stepping up as co-showrunner for Season 2, and Mark Mylod continuing as director and EP. Filming for Season 1 has already wrapped at Leavesden Studios, and the machine is clearly built to keep rolling straight into the next chapter.
My Honest Take
Dobby has always been one of the most quietly devastating characters in this entire series — a symbol of loyalty, self-sacrifice, and the cost of institutional cruelty, wrapped in a character who’s also, somehow, one of the funniest. Handing that role to a proven, award-winning young actor instead of treating him as a rendering afterthought feels like HBO actually gets what makes this franchise work.
I went into this news expecting a shrug. I came out of it genuinely excited for a character reveal a full season ahead of when we’ll even see him. That’s rare. Fingers crossed the execution matches the ambition.
