Ralsei Costume
Bring the gentle Prince of the Dark to life.
Ralsei is the sweet, soft-spoken Prince of the Dark from Toby Fox's hit indie game Deltarune. Fans love this character for his cozy, wizard-like design and kind personality. This guide helps you recreate his iconic Chapter 1 look, featuring a green robe, a matching pointed hat, a bright pink scarf, and round glasses.
- Difficulty
- Medium
- Time
- ~45 min
- Budget
- $30–85
Try it on
See yourself as Ralsei
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What you need for a Ralsei costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Ralsei costume — one box instead of 7 pieces.
Green wizard hat
A wide-brimmed, pointed wizard hat in a dark forest green color.
DIY: Cover a standard black witch hat with dark green felt or fabric.
Pink scarf
A long, cozy knit or fleece scarf in bright magenta or hot pink.
DIY: Cut a long strip of hot pink fleece fabric; no sewing required.
Green robe or tunic
A long-sleeved, loose-fitting green robe that reaches past the knees.
DIY: Use an oversized green long-sleeve t-shirt or a green hospital gown as a base.
Black heart patch
A black heart shape to place on the center chest of the robe.
DIY: Cut a heart shape out of black felt and pin or fabric-glue it to the robe.
Round glasses
Classic round, black wire-rimmed spectacles with clear lenses.
DIY: Pop the lenses out of cheap novelty round glasses.
Black face paint or balaclava
To create his Chapter 1 shadowed face look.
DIY: Use skin-safe black face paint around the eyes and cheeks.
Pink horns
Two small, curved pink horns to attach to the hat or a headband.
DIY: Sculpt small horns out of pink lightweight foam clay and attach them to the hat brim.
Rather not assemble it? See ready-made Ralsei costumes at Spirit Halloween ↗
How to put it together
- 1
Put on a black base layer or a lightweight black balaclava to create the shadowed face effect.
- 2
Slip on the long-sleeved green robe or tunic.
- 3
Attach the black felt heart to the center chest of the green robe using safety pins or fabric glue.
- 4
Wrap the long magenta scarf loosely around your neck, letting both ends hang down the front.
- 5
Place the round wire-rimmed glasses over your eyes (or over the balaclava if wearing one).
- 6
Attach the pink horns to the sides of the green wizard hat's brim.
- 7
Put on the green pointed wizard hat to complete the look.
Makeup & hair
If you are going for the shadowed look, apply black face paint over your entire face, leaving the area around your eyes clear for visibility. For his unmasked Chapter 2 look, skip the black face paint and wear a fluffy white wig with white goat ears instead.
Ralsei for couples, groups, kids & more
- couples
- Pair up with Kris wearing their blue and silver Dark World armor.
- group
- Form the 'Fun Gang' with Kris, Susie, and Lancer.
- kids
- Use an oversized green fleece poncho and a soft felt hat for a comfortable, warm kid's costume.
- Plus size
- A loose, flowing green kaftan or oversized tunic provides an excellent, screen-accurate drape.
- pet
- Dress a small white dog in a miniature pink collar scarf and a tiny green felt hat.
Tips
- If using a balaclava, make sure it is made of breathable mesh so you can see and breathe comfortably.
- Secure the heavy pink scarf to the shoulders of your robe with safety pins so it doesn't slide off while walking.
- Wear comfortable black pants and black shoes underneath the robe to keep the silhouette clean.
Ralsei costume FAQ
- What color is Ralsei's scarf?
- Ralsei wears a bright magenta or hot pink scarf wrapped around his neck.
- How do I make Ralsei's shadow face?
- You can use black face paint or wear a lightweight black mesh balaclava that covers your head while allowing you to see through it.
- What is the symbol on Ralsei's robe?
- He wears a simple black heart symbol directly in the center of his chest on his green robe.
Did you know? Ralsei's name is an anagram of Asriel, a major character from Toby Fox's previous game, Undertale.