Last updated: May 18, 2026ยท๐Ÿ”„ Product links checked and unavailable products replaced with current alternatives for 2026.ยท By Serdar

Halloween Costume Guide

Lemon Bullet Train Halloween Costume Guide

Frosted Hair  ยท  Denim Jacket  ยท  Thomas Says You’re a Gordon

Nine items built around one very specific haircut. The British assassin with a Thomas the Tank Engine worldview, and the bleached hair that makes the whole thing click.

Brian Tyree Henry Bullet Train Action Afro Hair Apple TV Curly Hair Leather Short Hair
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Quick Answer: The Lemon Halloween costume is nine pieces centered on two things: the hair and the jacket.
  • Frosted hair hat or blonde cover-up spray (essential)
  • Raw denim jacket over white shirt and skinny tie (essential)
  • Hoop earrings and lemon lens for detail
  • Raw denim slim jeans and black leather loafers

Lemon guards a briefcase on a bullet train from Tokyo to Kyoto and reads everyone around him using Thomas the Tank Engine characters as his framework. The frosted hair is the whole costume. Most people who saw Bullet Train (2022) will recognize it. Those who didn’t will see a very specific person and ask questions.

Items Total9 Items
DifficultyEasy
VibeBritish Hitman Energy
Cost$50โ€“$120

Lemon Bullet Train Halloween Costume Items

Lemon from Bullet Train Halloween costume infographic showing all nine items: lemon lens, frosted hair hat, blonde cover-up spray, hoop earrings, white dress shirt, raw denim jacket, plaid skinny tie, slim denim jeans, and black leather loafers

Lemon Costume Items

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Lemon Bullet Train Brian Tyree Henry 2022 Film
  • 1 Lemon LensThe yellow-tinted lens is a subtle nod to the name and the character’s way of seeing the world slightly differently from everyone else. It’s an optional detail, but it’s the kind of thing that makes people who’ve seen the film stop and look twice.
    See on twinklens
  • 2 Fake Hair Hat Black and GreyThis is the practical solution for the frosted hair. It fits over your natural hair and gives you the volume and two-tone texture without bleach. It needs to sit right from the moment you leave the house โ€” it will not stay put if you put it on crooked. Pin it.
    See on Amazon
  • 3 Blonde Cover Up Concealer SprayThe alternative to the hat, and the better option if your natural hair has volume and texture that works with the character. Spray applies temporarily and washes out. Better for shorter hair. Test it the day before so you know what you’re working with.
    See on Amazon
  • 4 Hoop EarringsLemon wears hoops throughout the film. They’re small but they read in photos. If you’re going without the yellow lens, this is the other detail-level piece that signals you paid attention to the costume.
    See on Amazon
  • 5 White Dress ShirtWorn under the jacket with the collar open and tie loosened. Not a formal shirt, not a casual shirt. A plain white button-down with a standard collar works. Nothing fitted to the point it looks like a costume, nothing baggy.
    See on Amazon
  • 6 Raw Denim Jean JacketThis is the essential outer layer. The dark denim jacket is what grounds the whole costume as Lemon’s look. It needs to be dark, structured, and fit properly in the shoulders. A jacket that swims on you changes the read from “intentional costume” to “borrowed from someone larger.”
    See on Amazon
  • 7 Plaid Check Woven Microfiber Skinny TieWorn loosened under the jacket. The pattern is what matters here. A solid tie reads as office cosplay. The plaid or check pattern is the specific visual that says Lemon and not just “guy in a denim jacket.”
    See on Amazon
  • 8 Raw Denim Slim Tapered JeansDark denim, slim tapered cut. Check your closet first. Any dark slim jeans with a clean silhouette work fine here.
    See on Amazon
  • 9 Black Leather LoaferPlain black leather loafer. Nothing sneaker-adjacent, nothing with a chunky sole. Loafers sit in the right register for the outfit. Check your closet before buying.
    See on Amazon
Lemon from Bullet Train 2022 Halloween costume reference showing Brian Tyree Henry's character in denim jacket, white shirt and patterned tie with frosted hair, standing in the train aisle behind his partner Tangerine

How to Style the Lemon Halloween Costume

The hair is what people read first, and it has to be sorted before you put on anything else. If the frosted hair is off or shifting by the time you arrive, the denim jacket and tie read as a vaguely stylish outfit with no clear reference. With the hair right, the whole thing clicks. The jacket shoulder fit is the second check: if it’s sitting too wide, the costume looks borrowed rather than worn.

Lemon is not excitable. He notices things quietly and files them away. At a party, this means you don’t explain the costume to people who don’t get it. You look at them, assess them, and eventually tell them which Thomas the Tank Engine character they are. Delivered with the right amount of sincerity, this is either the best conversation you have all night or the weirdest, and for Lemon, both outcomes would be fine.

Hair Hat vs. Spray: Pick One and Commit

Using both is not an option, and switching at the party is not realistic. If your hair is short and has natural texture, the spray gives a more natural result in photos. If it’s longer or you want more visual volume, the hat is more reliable. Either way, fix it before you leave and do not touch it again until you’re home.

The Tie Needs to Be Loose

A tight, properly knotted tie with a denim jacket looks like you forgot to change after a work event. Lemon wears his loosened, with the top button undone. Knot it, then pull it down two inches. That’s the specific look. A tie cinched to the collar here reads wrong immediately.

Lemon Group Halloween Costume Ideas

The Kyoto Express Assassins

Lemon, Tangerine, Ladybug, The Prince

This is the strongest option if your group has all seen the film. The four main players on the train have visually different looks, so no one ends up wearing the same costume. It reads clearly to anyone who knows Bullet Train and it’s a natural conversation starter for anyone who doesn’t. The weak point is Ladybug: Brad Pitt’s character is recognizable, but the costume is basically a blue tracksuit, which is either funny or underwhelming depending on how committed the person wearing it is.

Lemon Tangerine Ladybug The Prince

Suited Hitmen

Lemon, Jules Winnfield, Vincent Vega, John Wick

This is a conditional group because it only works if everyone commits to a clean build. Jules and Vincent are very widely recognized, John Wick is even more so, and Lemon is the niche pick of the four. The concept is solid because it does not need explanation once you see all four together. I would not put Lemon in this group unless the person wearing it is willing to keep the hair right all night, since without it they just look like a fifth person in a suit.

Lemon Jules Winnfield Vincent Vega John Wick

The Henry Portrayals โ€” Same Actor

Phastos, Alfred “Paper Boi” Miles, Bernie Hayes, Detective Mike Church

This only works at a party full of people who follow Brian Tyree Henry specifically. Phastos from Eternals and Paper Boi from Atlanta are the two that land broadly. Bernie Hayes from Godzilla vs. Kong and Detective Mike Church from Child’s Play are for people who have watched a lot of things and remember who was in them. Honestly, half the room will not connect the thread without you explaining it. If you’re okay with explaining, do it. If you want the concept to land on its own, it won’t.

Phastos Alfred “Paper Boi” Miles Bernie Hayes Detective Mike Church

The Lemons โ€” Same Name

Lemon, Liz Lemon, Lemon Breeland, Earl of Lemongrab

This is a niche group concept that works entirely on the joke of shared names across unrelated franchises. Liz Lemon from 30 Rock is broadly recognized. Lemon Breeland from Hart of Dixie is not. Earl of Lemongrab from Adventure Time is beloved by a specific audience. The concept needs a group that commits to the bit visually and doesn’t mind explaining it to most people they meet. If your group enjoys that kind of interaction, it’s a fun one. If not, it will get tiring fast.

Lemon Liz Lemon Lemon Breeland Earl of Lemongrab

Thomas and Friends Fanatics โ€” Niche

Lemon, Sir Topham Hatt, Mr. Conductor, Thomas the Tank Engine

This is a very niche concept and it should be treated as such. It only makes sense if you know the film, which means the audience needs to know the film too. Sir Topham Hatt as a costume is just a man in a top hat and suit, which is a reasonable build. Mr. Conductor from Shining Time Station is recognizable to a certain generation. Thomas the Tank Engine is obviously recognizable but that costume is a commitment and not always flattering. This group is genuinely funny to the right people and invisible to everyone else.

Lemon Sir Topham Hatt Mr. Conductor Thomas the Tank Engine
Lemon from Bullet Train cosplay reference showing the character seated by a train window with frosted hair, dark denim jacket, and striped tie with hands clasped

ALL BULLET TRAIN & SPIN-OFF COSTUME IDEAS

Every Bullet Train costume guide on CostumeRealm.

Lemon Halloween Costume DIY Tips

What You Need to Source vs. What You Likely Own

The hair solution, denim jacket, and patterned tie are the three things you need to find specifically. Everything else has a good chance of already being in your wardrobe. Check the jeans and loafers first before buying.

  • Hair hat or spray: source one or the other, not both
  • Raw denim jacket: the key outer layer, buy or borrow if you don’t own one in dark denim
  • Plaid skinny tie: cheap to find, specific enough to matter
  • White dress shirt: you probably have one already
  • Hoop earrings: inexpensive, worth the detail
  • Yellow lens: optional, skip it if budget is tight
  • Slim dark jeans: check your closet first
  • Black leather loafers: check your closet first

The Thomas Detail Is a Social Prop

A small Thomas the Tank Engine figure is not in the item list, but it’s worth considering if you’re going to a party where people have seen the film. Lemon’s whole system is reading people as Thomas characters. Having the figure gives you something to do with your hands and a built-in bit. At a loud party where you’d otherwise need to explain the costume, pulling out a small Thomas figure and silently evaluating someone is funnier than any explanation you could give. Skip it if the crowd hasn’t seen Bullet Train. With the right crowd, it’s the best prop you’re not buying from the list.

  • A small Thomas figure: optional but high social return with the right crowd
  • Practice one or two character assignments before the night so you can deliver them without thinking
  • Lemon is unhurried. Long pauses before speaking are in character.
  • Do not explain the Thomas system. Let people ask.

Lemon Halloween Costume: FAQ

Nine items: a lemon-tinted lens, a frosted hair hat or blonde cover-up spray, hoop earrings, a white dress shirt, a raw denim jacket, a plaid skinny tie, slim denim jeans, and black leather loafers. The frosted hair and the denim jacket are the two essential pieces. Without the hair, everything else just looks like a casual outfit.

His most quoted line is: “Everyone’s a Thomas character, you just gotta figure out which one.” He also says, at a key moment: “I told you I was gonna be fine.” The Thomas line is the one most people remember and the one worth delivering at a party if the timing is right. Say it to someone you’ve been watching for a few minutes, then tell them which Thomas character they are. Do not explain why.

Bullet Train was a solid hit in 2022 but it is not a film that has stayed in heavy rotation since then. People who saw it will recognize Lemon right away, particularly the hair. People who didn’t will see an interesting costume and ask questions. This is not a “everyone will get it” costume. It works best at a party where you know the crowd has broad taste in film.

Yes. Without it, the denim jacket and tie combination has no clear character identity. The frosted hair is the one feature that separates Lemon from any other person in a casual jacket. Do not skip it and expect the costume to read.

Both options in the item list exist for this reason. The spray works better on shorter hair with natural texture. The hat is the more reliable option if your hair is longer or significantly darker. Test the spray on a small section the day before to see how it reads on your specific hair before committing to it for the whole night.

Lemon uses Thomas the Tank Engine as his system for understanding people. He assigns a character to everyone he meets and takes it seriously. For the costume, a small Thomas figure is optional but it is the prop that signals you actually watched the film rather than just looked up the costume. It also gives you a reliable bit for the whole night with almost no effort required.

Lemon is one half of a British assassin duo in Bullet Train (2022), played by Brian Tyree Henry. He and his partner Tangerine are assigned to guard a briefcase on a high-speed train from Tokyo to Kyoto. Lemon is the more observant of the two, with an unusual habit of categorizing everyone he meets as a Thomas the Tank Engine character. The film is based on the Japanese novel Maria Beetle by Kotaro Isaka.