カボチャのお化けや魔女やミイラ男などハロウィンのイラストや要素パターンを作成する生成AIのプロンプト集、Midjourneyのプロンプト文例集などプロンプトテンプレートまとめ #Halloween #Jack O’ Lantern’s

はじめに

2024年のハロウィンは、10月31日（木曜日）にやってきます。今年も街中はカボチャのお化けや魔女、ミイラ男など、さまざまなハロウィンキャラクターで溢れ、仮装パーティーやトリックオアトリートが楽しめる時期です。AI技術も進化し、生成AIを使って自分だけのオリジナルハロウィンデザインを作成する人も増えています。今年は、2024年らしいクリエイティブなデザインでハロウィンを盛り上げてみてはいかがでしょうか？

今回は生成AIを使って、ユニークなハロウィンキャラクターを作りたいクリエイターのために、MidJourneyでカボチャのお化けや魔女、ミイラ男といったハロウィンの象徴的なイラストを簡単に生成するためのプロンプト集をまとめました。このガイドでは、誰でも簡単に使えるプロンプトや、細部までこだわったカスタマイズの方法をご紹介します。

初心者向け：誰でも使える！シンプルなプロンプト例

まずは、MidJourneyで簡単に使えるプロンプトをいくつかご紹介します。これらのプロンプトをそのまま入力するだけで、素敵なアートが生成されます。

• プロンプト例：
  • “A haunted mansion on a hill, surrounded by mist with glowing jack-o’-lanterns lining the path. –stylize 250 –v 6.1”
  • “A spooky ghost floating above a graveyard, with a full moon and bats flying in the background. –niji 6 –s 250”
  • “A witch flying on a broomstick over a dark forest, with glowing pumpkins scattered across the ground. –stylize 250 –v 6.1”
  • “A creepy scarecrow standing in a pumpkin patch at dusk, with crows circling above. –niji 6 –s 250”

これらのプロンプトは、特定のスタイルやディテールを指定しなくても美しい結果が得られるので、初心者におすすめです。

上級者向け：アートスタイルやアーティストを意識したプロンプト

1.ハロウィンのキャラクターデザインを作成する簡単プロンプト

MidJourneyを活用して、AIで楽しくハロウィンのキャラクターを作りましょう。ここでは、カボチャのお化けや魔女、ミイラ男の基本的なプロンプト例を紹介します。

• プロンプト例
  • “A witch in the style of gothic Victorian art, with intricate lace details and a dark, moody atmosphere, standing under a dimly lit streetlamp. –stylize 250 –v 6.1”
  • “A jack-o’-lantern character inspired by the surrealism of Salvador Dalí, with melting features and distorted shapes in a dreamlike landscape. –stylize 250 –v 6.1”
  • “A vampire designed in the style of baroque painting, with dramatic lighting, elaborate clothing, and an ominous, richly detailed background. –niji 6 –s 250”
  • “A skeleton warrior in the style of Art Nouveau, with flowing, decorative lines and organic patterns blending with nature in the background. –niji 6 –s 250”

2.カスタマイズするハロウィン衣装イラストのプロンプト

ハロウィン衣装をカスタマイズするためのAIプロンプトを紹介します。個性的な魔女やミイラ男の衣装をデザインするためのヒントも含めています。

• プロンプト例
  • “A witch’s costume inspired by Gustav Klimt’s Art Nouveau style, featuring intricate gold patterns, flowing fabrics, and ornate headpieces, set against a richly textured background. –stylize 250 –v 6.1”
  • “A vampire’s attire designed in the style of Renaissance portraiture, with elaborate ruffled collars, rich velvet textures, and detailed embroidery, set in a candlelit ballroom. –stylize 250 –v 6.1”
  • “A ghostly figure dressed in a Baroque-style gown, with heavy drapery, intricate lace details, and dramatic, high-contrast lighting reminiscent of Caravaggio’s chiaroscuro technique. –niji 6 –s 250”
  • “A scarecrow costume inspired by cubism, with angular shapes, fragmented patterns, and abstract forms in earthy, muted colors, reflecting the surrealist elements of Pablo Picasso’s work. –niji 6 –s 250”

3.魔女とミイラ男のキャラクターを生成するコンセプトアートプロンプト

AIを使って魔女やミイラ男をテーマにしたコンセプトアートを作成するためのプロンプト例を解説します。

• プロンプト例
  • “A witch character designed in the style of Hieronymus Bosch, featuring surreal and nightmarish elements, with twisted, otherworldly creatures surrounding her in a dark, fantastical landscape. –stylize 250 –v 6.1”
  • “A mummy character inspired by ancient Egyptian art and Gustav Klimt’s golden, mosaic-like textures, wrapped in shimmering golden bandages with hieroglyphic patterns, standing in a lavish, mystical tomb. –stylize 250 –v 6.1”
  • “A witch depicted in the style of expressionism, with exaggerated features, bold colors, and chaotic brushstrokes, casting a spell under a distorted moon in a turbulent, abstract night sky. –niji 6 –s 250”
  • “A mummy designed in the gothic style of Francisco Goya, with decayed, eerie features, shadowy surroundings, and a dark, haunting atmosphere reminiscent of his black paintings series. –niji 6 –s 250”

4.ハロウィンモンスターを創作するユニークなプロンプト

ハロウィンモンスターを独自に作成するためのプロンプトアイデアをいくつか提供します。

• プロンプト例
  • “A gigantic pumpkin monster with sharp teeth and vines as arms. –stylize 250 –v 6.1”
  • “A grotesque pumpkin monster designed in the surrealist style of René Magritte, with multiple faces and twisted features, emerging from a misty, dreamlike landscape filled with uncanny objects. –stylize 250 –v 6.1”
  • “A werewolf creature depicted in the style of Edgar Degas, with dynamic, fluid movements, fur textured in impressionistic brushstrokes, and a haunting, moonlit forest as a backdrop. –niji 6 –s 250”
  • “A Frankenstein-like monster inspired by the abstract cubism of Pablo Picasso, featuring fragmented, geometric body parts in a chaotic but balanced composition, with bold, contrasting colors. –niji 6 –s 250”

5.カボチャのランタンをAIでリアルに描くプロンプト

カボチャのランタンをリアルに描写するためのプロンプトと、いくつかのイラスト例を見ていきましょう。

• プロンプト例
  • “A jack-o’-lantern rendered in the hyperrealistic style of Caravaggio, with dramatic chiaroscuro lighting highlighting the carved, glowing face and casting deep shadows on the pumpkin’s textured surface. –stylize 250 –v 6.1”
  • “A carved pumpkin lantern in the style of Dutch Golden Age still life, with meticulous attention to detail, natural lighting, and subtle reflections, surrounded by autumnal fruits and rustic objects. –stylize 250 –v 6.1”
  • “A glowing jack-o’-lantern depicted in the impressionist style of Claude Monet, with soft, dappled light and loose brushstrokes, sitting amidst a field of fallen autumn leaves, bathed in warm sunset hues. –niji 6 –s 250”
  • “A surreal jack-o’-lantern inspired by Salvador Dalí, with its features melting and warping in an otherworldly landscape, the glow from within distorting in bizarre, dreamlike forms. –niji 6 –s 250”

6.ホラーアートを生成するハロウィン要素を活かしたプロンプト

ホラー要素を取り入れたイラストを生成するための具体的なプロンプトをご紹介します。

• プロンプト例
  • “A haunted mansion in the style of H.R. Giger, with biomechanical walls, grotesque organic textures, and eerie, alien-like creatures lurking in the shadows, illuminated by an ominous, glowing moon. –stylize 250 –v 6.1”
  • “A Halloween scarecrow inspired by Edvard Munch’s expressionism, with distorted, exaggerated features and intense, swirling brushstrokes, standing in a desolate, windswept field under a blood-red sky. –stylize 250 –v 6.1”
  • “A dark forest filled with ghostly apparitions, depicted in the gothic style of Francisco Goya, with shadowy, twisted trees and nightmarish, distorted spirits emerging from the mist, using heavy contrasts and macabre details. –niji 6 –s 250”
  • “A vampire emerging from a crypt, inspired by the surrealist works of Max Ernst, with bizarre, dreamlike figures and textures, blending elements of horror and fantasy in a chaotic, otherworldly landscape. –niji 6 –s 250”

7.ハロウィンで使えるイラスト風のお化けパターンのプロンプト

ハロウィンのお化けパターンを作成するための簡単なプロンプト例を一挙にご紹介。

• プロンプト例
  • “A series of ghostly figures inspired by Alphonse Mucha’s Art Nouveau, with flowing, ornate lines and delicate, floral patterns, each ghost adorned with intricate, swirling robes and ethereal, glowing details. –stylize 250 –v 6.1”
  • “A playful ghost pattern in the style of Pablo Picasso’s cubism, featuring fragmented, geometric shapes and overlapping, abstract forms in muted tones of black, white, and gray, creating a whimsical yet eerie effect. –stylize 250 –v 6.1”
  • “A Halloween ghost design inspired by the minimalism of Kazimir Malevich, with simple, abstract shapes and stark contrasts between light and dark, giving the figures an unsettling yet modern, clean aesthetic. –niji 6 –s 250”
  • “A spooky ghost pattern in the style of Edward Gorey, with finely detailed, crosshatched lines, dark Victorian-inspired clothing, and eerie, elongated figures haunting a vintage, gothic setting. –niji 6 –s 250”

8.ハロウィンイベントのポスター風ユニークなデザインを作るプロンプト

デジタルなハロウィンのイラストを生成するためのユニークなプロンプトを、具体的な例とともに紹介します。

• プロンプト例
  • “A Halloween event poster inspired by the Bauhaus movement, using bold geometric shapes, sharp angles, and minimalistic color blocks in black, orange, and red to create a modern, eerie design featuring a stylized ghost and pumpkin. –stylize 250 –v 6.1”
  • “A vintage Halloween event poster in the style of Art Deco, with elegant, angular lines and rich gold accents, featuring a sinister witch flying over a sleek, skyscraper-lit cityscape under a glowing full moon. –stylize 250 –v 6.1”
  • “A surreal Halloween event poster inspired by Salvador Dalí, featuring melting jack-o’-lanterns, distorted skeletons, and warped bats in a dreamlike landscape, with bold, psychedelic colors and surreal textures. –niji 6 –s 250”
  • “A horror-themed Halloween event poster in the style of gothic Romanticism, with dark, brooding skies, elaborate, hand-drawn typography, and a shadowy vampire standing against a crumbling castle lit by lightning. –niji 6 –s 250”

9.ハロウィン限定！魔女の世界を創り出すオリジナルのプロンプト

デジタルなハロウィンのイラストを生成するためのユニークなプロンプトを、具体的な例とともに紹介します。

• プロンプト例
  • “Halloween world, A witch’s lair designed in the intricate Art Nouveau style of Alphonse Mucha, with flowing organic patterns, mystical symbols, and delicate, swirling vines framing a spell-casting witch surrounded by enchanted objects. –stylize 250 –v 6.1”
  • “Halloween world, A surreal witch’s world inspired by Salvador Dalí, with floating clocks, distorted broomsticks, and melting cauldrons, set in a dreamlike, twisted landscape with warped realities and bizarre, otherworldly creatures. –stylize 250 –v 6.1”
  • “Halloween world, A dark, gothic witch’s castle in the style of Francisco Goya, with ominous shadows, eerie candlelit halls, and twisted, nightmarish figures creeping through the stone corridors, all bathed in haunting, moonlit darkness. –niji 6 –s 250”
  • “Halloween world, A vibrant, abstract witch’s world inspired by Wassily Kandinsky, where magic manifests as colorful, chaotic lines and geometric shapes swirling around the witch as she conjures mystical powers in an energetic, dynamic composition. –niji 6 –s 250”

10.ホラーキャラクターが勢ぞろいするミイラ男や魔女のプロンプト

ハロウィン風のミイラ男や魔女などのホラーキャラクターをAIで生成するためのプロンプトリストです。

• プロンプト例
  • “Cute Halloween illustration, A gathering of horror characters, including a mummy and a witch, depicted in the style of Hieronymus Bosch, with twisted, grotesque features and surreal, nightmarish creatures surrounding them in a chaotic, hellish landscape. –stylize 250 –v 6.1”
  • “Halloween illustration, A lineup of classic Halloween characters like a mummy and a witch, drawn in the bold, graphic style of Roy Lichtenstein’s pop art, with vibrant comic book-like colors, halftone dots, and exaggerated, dramatic expressions. –stylize 250 –v 6.1”
  • “Cute Halloween illustration, A group of Halloween monsters, including a mummy and a witch, inspired by the expressionist style of Egon Schiele, with elongated, angular bodies, distorted faces, and intense, dark color palettes, all set against a moody, abstract background. –niji 6 –s 250”
  • “Halloween illustration, A spooky ensemble of horror characters, including a mummy and a witch, illustrated in the eerie, gothic style of Edward Gorey, with fine crosshatched lines, Victorian clothing, and a bleak, shadowy atmosphere, evoking a chilling, vintage feel. –niji 6 –s 250”

Midjourneyのプロンプト文例集

ここからは、私がオリジナルで作成したMidjourneyのプロンプト文例集をお届けします。

使用したプロンプトはこちら▼
＜prompt＞
a cartoon image of 3 beautiful waifu witches one is holding a pumpkin laughing, another which is eating candy, another one is holding a broom --ar 5:6 --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
1girl, solo, long hair, looking at viewer, smile, open mouth, brown hair, black hair, dress, bow, holding, green eyes, short sleeves, hair bow, bowtie, hair bun, blurry, black dress, red bow, blurry background, thick eyebrows, holding food, red bowtie, halloween, jack-o'-lantern, pumpkin, vegetable, holding vegetable --ar 16:9 --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
A cute girl dressed in Halloween costume, wearing an orange and black dress with pumpkin pattern, white hair, long curly braid, holding broomstick, witch hat on head, simple background, full body portrait, game character design, 2D flat style, Japanese anime style, cartoon style, white solid color background, --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
A retro-style chibi witch stands next to a smiling Jack-o'-lantern. In the background, there’s a ghost, pumpkins, and bats, all illustrated in muted tones of orange and green. The witch has large, bright yellow eyes and a sweet smile, wearing a classic retro witch's hat. The overall design has a nostalgic vibe with retro shades of orange, brown, and faded yellow, while the background remains white to highlight the figures. --style raw --weird 600 --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
Create an enchanting anime card captor sakura in Halloween scene featuring a charming children with a scarecrow and crow perched on its shoulder. Surround the scarecrow with whimsical heart-shaped decorations and soft glowing lights to evoke a sense of warmth and affection. Include an elegant banner that reads "HAPPY HALLOWEEN" in a beautifully flowing font, ensuring the overall composition is highly detailed and infused with a tender, magical atmosphere. --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
cute little witch in a pumpkin patch --ar 16:9 --niji 6 --s 250

使用したプロンプトはこちら▼
＜prompt＞
cute little witch in a pumpkin patch --ar 16:9 --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
Halloween friends boy girl anime --ar 16:9 --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
hot anime waifu with halloween costume, halloween spooky themed, pumpkins --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
Halloween party in night club, Studio Ghibli anime style --quality 2 --ar 16:9 --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
painted anime style ginger female with green eyes holding a jack-o’-lantern in front of her face, night, spooky, scary, Halloween, portrait --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
Watercolor style sticker of a young witch in a red suit and hat with a bat image. The witch holds a pot of potion. There is a small pumpkin near the witch's feet. The sticker is surrounded by a white outline. The background is light. Style by Selective Colouring --ar 9:16 --v 6.1 

使用したプロンプトはこちら▼
＜prompt＞
Two girls posing side by side for a photo. The first is a 16-year-old girl dressed as a witch with minimal exposure, wearing a witch hat, holding a candy bucket in her left hand and a star-shaped wand in her right hand, and draped in a black cloak. The second is a 17-year-old girl dressed in a Halloween-themed bunny girl outfit, with playful details like pumpkin patterns, bat wings, and other spooky elements. The background is filled with cute Halloween-themed decorations, in a manga-style design with high resolution. Both girls are striking fun poses, capturing the spirit of Halloween. A small '13' signature as the artist's mark is in the bottom-right corner. --ar 16:9 --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
A captivating Halloween-themed Animation featuring a 20 year old Korean beauty dressed in a cute incubus or witch-inspired costume. She stands in the center of the scene with chest-length, wavy brown hair. Her outfit is predominantly black, with a short skirt in a purple checkered pattern. Surround her with playful Halloween decorations such as pumpkins, bats, and glowing lanterns. The atmosphere is whimsical, with a mix of autumn leaves scattered on the ground and mist drifting through the scene, Cute Halloween illustration, A gathering of horror characters, The background includes a cozy, enchanted forest at twilight, illuminated by soft, eerie lights, adding a magical charm to the composition. --v 6.1 --q 2 --ar 16:9

使用したプロンプトはこちら▼
＜prompt＞
The poster of the live broadcast event shows, with text "HALLOWEEN 2024" on top, halloween night, Under a castle, there are several black witches, several pumpkin lanterns, and several black bats, Halloween illustration, A lineup of classic Halloween characters like a mummy and a witch, drawn in the bold, graphic style of Roy Lichtenstein’s pop art, with vibrant comic book-like colors, halftone dots, and exaggerated, dramatic expressions, Under a castle, there are several black witches, several pumpkin lanterns, and several black bats, 3D effect, professional photography, 8K, pumpkin color background --ar 16:9 --v 6.1

使用したプロンプトはこちら▼
＜prompt＞
The poster of the live broadcast event shows, with text "HALLOWEEN 2024" on top, halloween night, Under a castle, there are several black witches, several pumpkin lanterns, and several black bats, Halloween illustration, A spooky ensemble of horror characters, including a mummy and a witch, illustrated in the eerie, gothic style of Edward Gorey, with fine crosshatched lines, Victorian clothing, and a bleak, shadowy atmosphere, evoking a chilling, vintage feel, Under a castle, there are several black witches, several pumpkin lanterns, and several black bats, 3D effect, professional photography, 8K, pumpkin color background --ar 16:9 --niji 6 --s 250

まとめ

ハロウィンのイラストを生成するためのAIプロンプトを活用し、個性的で魅力的なキャラクターデザインを簡単に作成しましょう。この記事で紹介したプロンプトを参考にして、自分だけのユニークなハロウィン作品を楽しんでみてください。