Last updated: May 9, 2026· By Serdar

Cosplay Guide

Assane Diop Lupin Cosplay Guide

Newsboy Hat  ·  Trench Coat  ·  French Streetwear

The gentleman thief’s everyday look: a newsboy cap, a long dark trench, Nike on his feet, and the absolute conviction that he’s already three steps ahead of everyone in the room.

Lupin Omar Sy Classy French Hat Mystery Netflix Suit Thief Vintage
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Quick Answer: The Assane Diop Lupin cosplay is six pieces.
  • Newsboy hat (essential)
  • Wool blend trench coat (essential)
  • Nike sneakers
  • Soccer track jacket
  • Nike sportswear pants
  • PUMA track jacket

Assane Diop is the modern-day gentleman thief at the centre of Netflix’s Lupin, played by Omar Sy with a charm that makes every disguise completely believable. His style is rooted in French streetwear: relaxed layers, real sportswear brands, and a newsboy cap that’s become one of the most recognisable Lupin outfit details online. The look works because it’s sharp without trying too hard. He’s not costumed; he just dresses well. You can read more about the character and the series on the Lupin Wikipedia page or the official Netflix series page.

Items Total6 Items
DifficultyEasy
VibeStreetwear
Cost$50-$120

Assane Diop Lupin Costume Items

Assane Diop Lupin cosplay infographic showing all six costume items: newsboy hat, wool blend trench coat, Nike sneakers, soccer track jacket, Nike sportswear pants, and PUMA track jacket

Assane Diop Lupin Costume Items

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Lupin Assane Diop Netflix French Streetwear
  • 1 Newsboy HatThe single most important piece in the Lupin cosplay. Get the hat right and half the work is done. It’s the detail that connects the modern Assane Diop look back to the classic Arsene Lupin silhouette.
    See on Amazon
  • 2 Oversized Notched Long Wool Blend Trench CoatThe coat that gives the Lupin outfit its shape. Long, dark, and slightly oversized, it delivers the composed, unhurried silhouette that defines Assane across the series. Pairs with everything else in this list.
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  • 3 Nike SneakerAssane keeps his footwear clean and functional. Nike sneakers ground the whole lupin outfit in real-world French street style without tipping into costume territory.
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  • 4 Soccer Track JacketOne of the recurring layering pieces in Assane’s wardrobe throughout the series. Casual, practical, and very French. Wear it under the trench coat or on its own for a more relaxed lupin cosplay take.
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  • 5 Nike Sportswear PantClean, fitted, and consistent with Assane’s preference for real sportswear brands in his everyday looks. These pair naturally with both the soccer jacket and the trench coat.
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  • 6 PUMA Track JacketAn alternative layering option for the Lupin costume. Swap this in for the soccer jacket depending on what you have or what fits the occasion. Either works. Neither is wrong.
    See on Amazon
Assane Diop in a dark purple three-piece suit with a white dress shirt and luxury wristwatch at a formal event, showing the dressed-up version of the Lupin Halloween costume

How to Style the Lupin Cosplay

Start with the Nike sportswear pants and a dark base layer. Add the soccer track jacket or the PUMA, depending on your preference. Lace up the Nikes. Pull the trench coat over everything and leave it open. Then put the newsboy cap on last, positioned slightly forward, not perfectly centered. Assane never looks like he tried.

The in-character move at any event is calm confidence. He doesn’t explain himself. He doesn’t react visibly to anything. If someone doesn’t immediately recognise the costume, just smile like you planned it that way. Because Assane would.

The Hat: Fit Matters More Than Style

A newsboy cap that sits too far back reads as a fashion choice. One that sits too low reads as a disguise. Assane’s hat lands right in between: slightly forward, settled naturally on the head like he’s been wearing it for years. Before your event, wear it around the house for an hour. Let it settle into position. Adjust until it feels effortless, because that’s exactly how it should look. A hat that’s been broken in reads completely differently to one pulled out of packaging that morning.

Layering the Trench: Open, Not Belted

Assane almost never belts the trench coat. He wears it open, letting it move. Belting it changes the silhouette from street-level composed to slightly theatrical, which is the wrong direction for this lupin outfit. Keep the coat open and let the track jacket underneath add the colour detail. If it’s cold enough that you need to close it, that’s fine, but skip the belt entirely and leave the collar relaxed. The coat does the work. Don’t wrestle it into submission.

Choosing Between the Two Track Jackets

Both jackets work. The soccer track jacket is slightly more specific to Assane’s look across the series and reads a little more French. The PUMA jacket is a solid backup if the sizing or availability on the other one doesn’t work out. Honestly, either is fine under the trench coat where only the collar is visible anyway. This isn’t a decision worth losing sleep over.

The Formal Assane Option

If you want to reference his dressed-up moments from the series, a dark three-piece suit with a white dress shirt and a statement watch works as an alternate Lupin cosplay take. It’s a harder build and more expensive. The casual streetwear version with the newsboy cap gets recognised faster and is way easier to wear for four hours. Go formal only if you already own the pieces.

Lupin Group Cosplay Ideas

The Lupin Cast

Assane Diop and Bishop

The most direct group option for fans of the show. Assane and his closest ally make a tight two-person pairing that any Lupin fan will clock immediately. This only really works if both people have seen the series, but when it does work it lands well. Keep it to people who actually watched it.

Assane Diop Bishop

Gentleman Thieves

Assane Diop, Arsene Lupin and Black Cat

Three thieves across three different eras and styles. Arsene Lupin brings the vintage French original, Assane is the modern take, and Black Cat adds a comic book edge. It’s a niche concept that needs some explanation for general crowds, but for people who get it, it’s a great three-person build. Commit to the theme or skip it.

Assane Diop Arsene Lupin Black Cat

Mystery and Deception

Assane Diop, Raymond Reddington and Benoit Blanc

Three characters who rely on intelligence, misdirection, and confidence rather than brute force. Reddington brings the criminal mastermind energy, Assane the gentleman thief charm, and Benoit Blanc the sharpest mind in any room. It works well as a group because each person has a clearly distinct visual identity, so there’s no confusion about who is who.

Assane Diop Raymond Reddington Benoit Blanc

Crime Comedy Mix

Assane Diop, Nick Spitz and Audrey Spitz

Pairing Assane with the Spitz couple from Murder Mystery is a funny contrast: one effortlessly competent thief next to two extremely unqualified amateur detectives. The tonal gap between them is the joke, and it plays well at parties where not everyone is a hardcore crime drama fan. One of the more crowd-friendly options on this list.

Assane Diop Nick Spitz Audrey Spitz

Netflix Crime Leads

Assane Diop, Raymond Reddington and Bishop

Three compelling crime drama leads from different Netflix worlds brought into one group. The visual contrast works well: Reddington in his signature hat and suit, Assane in his streetwear layers, and Bishop rounding it out. Solid option for a group that wants a crime theme without committing to a single franchise.

Assane Diop Raymond Reddington Bishop

Amateur Hour Detective Club

Assane Diop, Nick Spitz, Audrey Spitz and Benoit Blanc

One actual master thief surrounded by detectives of wildly varying competence levels. Assane is the only person in this group who actually knows what he’s doing, which is funny if everyone commits to it. Four-person group, clearly distinct visuals, and it covers crime drama fans and comedy fans in the same build. Works at any size event.

Assane Diop Nick Spitz Audrey Spitz Benoit Blanc
Split view of Assane Diop in a casual olive green sweatshirt leaning over a desk, and below wearing a classic long dark overcoat while walking through city streets at night with his son

Lupin Cosplay DIY Tips

What to Buy vs What to Already Own

The Assane Diop cosplay is one of the most budget-friendly celebrity character builds available, mostly because the items are real clothing rather than dedicated costume pieces. The newsboy hat is the only purchase with no substitute. Everything else can be approximated from existing wardrobe if you have similar pieces. A long dark coat of any kind works in place of the specific wool trench. Any Nike trainer covers the footwear. Any track jacket in a clean colour covers the layering.

  • Newsboy hat = essential, no real substitute
  • Trench coat = any long dark coat works
  • Nike sneakers = any clean trainer
  • Soccer track jacket = any sporty zip jacket in a solid colour
  • Nike sportswear pants = any dark jogger or slim trouser
  • PUMA track jacket = optional backup, skip if you have the other jacket

The Arsene Lupin Book Prop: Simple and Effective

Assane’s whole character is built on the Arsene Lupin novels his father gave him as a child. Carrying a copy of an Arsene Lupin book as a prop is a low-effort detail that tells the entire backstory without a single word. It’s the kind of thing that gets an immediate reaction from anyone who’s watched the series, and reads as a thoughtful, considered choice to everyone else. A paperback slipped into a coat pocket costs almost nothing and adds genuine character depth to the lupin cosplay in a way that no accessory on this list can match.

  • Arsene Lupin novel = best single in-character prop available
  • Any edition works, but a vintage-looking paperback is ideal
  • Tuck it in the coat pocket rather than carrying it all night
  • If someone asks about it, stay in character: it’s your father’s copy

Lupin Assane Diop Cosplay: Frequently Asked Questions

The Assane Diop cosplay for Halloween 2026 is built around six items: a newsboy hat, a wool blend trench coat, Nike sneakers, a soccer track jacket, Nike sportswear pants, and a PUMA track jacket as an optional layer. The hat and trench coat are the two pieces that do the most work. Get those right and the rest is flexible.

His most iconic line is “I am Arsene Lupin,” delivered with complete calm and zero drama. He also says “Everything I am, everything I’ve done, it all started with a book.” For Halloween delivery: speak slowly, hold eye contact, never rush. Assane is always the most composed person in any room. That’s the character note that sells the lupin costume beyond the clothes.

The Assane Diop lupin outfit is drawn directly from his everyday wardrobe across the Netflix series. He mixes casual French streetwear with considered layering and outerwear. The newsboy cap is a nod to the classic Arsene Lupin aesthetic, while the track jackets and sneakers keep the look grounded in the modern setting of the show.

Assane Diop is the main character of Netflix’s Lupin, played by Omar Sy. Inspired by the Arsene Lupin novels his father gave him, Assane uses disguise and intelligence to expose the powerful family that framed and destroyed his father. The series launched in 2021 and became one of Netflix’s biggest non-English language hits globally.

Very easy. Most of the items are real clothing you can actually wear again. The newsboy hat is the only dedicated purchase that serves no other purpose. Everything else is standard wardrobe. Budget builds using items already owned can come in well under $50.

A newsboy cap. It’s his most consistent visual signature across the series and the one item that most clearly signals the Lupin cosplay at any distance. The hat connects his modern look back to the classic Arsene Lupin character visually, which is exactly the point.

A long wool blend trench coat, typically dark. He wears it open, not belted, which gives the lupin outfit its relaxed, confident silhouette. It’s the second most important piece in the build after the hat. Any long dark coat approximates it if the specific style isn’t available.