How to Generate Custom Discord Emojis of Your Character Using AI (PixAI + Tsubaki.3)

Default Discord reactions get the job done, but they lack personality. Downloading a generic emoji pack from a public repository adds variety, but those emotes won’t look like your server's mascot or your own original character (OC).

By combining an original character image with an AI image generator, you can produce a matching set of custom reaction emojis that keep your character’s features consistent across every expression. Here is a step-by-step technical guide to generating custom static emotes with PixAI (Tsubaki.3), removing their backgrounds, and deploying them to Discord.

Technical Constraints: Discord Emoji Specifications
Before generating artwork, ensure your pipeline matches Discord's upload requirements:

• File Size Limit: Max 256 KB
• Formats: PNG, JPEG, GIF, WEBP (PNG recommended for alpha transparency)
• Naming Syntax: Minimum 2 characters, alphanumeric and underscores only
• Server Slots: 50 static slots for free servers (expandable via Server Boosts)
• Permissions: Manage Emojis or Create Expressions permission (or Server Owner)
• Cross-Server Access: Requires Discord Nitro or Nitro Basic

For full technical specifications, check the Discord Official Emoji Guide.

Practical Tip: Always set your canvas ratio strictly to 1:1 square so no details get truncated during upload.

Step 1: Map Your Reaction Set

Define a focused list of 4 to 8 core reactions before prompting:
• Crying (overwhelmed/sadness)
• Angry (pouting/frustration)
• Thumbs Up (approval/agreed)
• Heart / Love (affection/appreciation)
• Laughing / Joy (amusement)
• Confused (puzzled/questioning)

Pre-defining your reaction list stabilizes the base prompt structure across iterations.

Step 2: Single-Emote Generation Workflow

Open the PixAI Image Generator, select the Tsubaki.3 model, and set aspect ratio to 1:1.

Use Smart Reference to link your existing OC image as @image1 for structural and visual consistency. Refer to the Tsubaki.3 Prompt Guide for advanced reference syntax.

Core Prompt Template
Chibi version of the girl from @image1 as a Discord emoji: super deformed, 2 heads tall, head and shoulders only, her face fills most of the square frame, centered. . Thick clean dark outlines, bright flat colors, plain pure white background, single character, no text. as in @image1.

Example Prompt (Crying Expression)
Chibi version of the girl from @image1 as a Discord emoji: super deformed, 2 heads tall, head and shoulders only, her face fills most of the square frame, centered. She's crying loudly with tears running down her cheeks and her mouth wide open. Thick clean dark outlines, bright flat colors, plain pure white background, single character, no text. Keep her short copper-colored hair, smoky green eyes, a weathered oversized work jacket, a fitted ribbed turtleneck, heavy silver rings, and a small mechanical-looking pendant hanging from her collar, and her green tactical glasses as in @image1.

Iteration Notes: Complex gestures like "Thumbs Up" or "Heart" may require 2-3 generation rerolls to render clean hands and fingers. Minor accessory details (like jacket buttons or hairpins) may vary slightly across runs while maintaining primary character identity.

Step 3: Background Alpha Processing

Discord supports both dark (#313338) and light client themes. Leaving a solid white background creates harsh rectangular boxes around your emotes.

1. Navigate to See More > Enhance on the PixAI menu.
2. Select your generated emote and choose Background Remover.
3. Process the file (1,000 credits per request) and download the file from task details.

If you encounter residual edge halos around hair strands, consult our tutorial on How to Make Background Transparent Without White Edges.

Step 4: Server Deployment

1. Open Discord desktop app > Server Settings.

1. Click Upload Emoji and select your transparent PNG files.

1. Name your files using your character name as a prefix (e.g., :mora_crying:, :mora_angry:) for quick search autocompletion.

FAQ

Q: Can I use custom emojis on other servers?

A: Hosting works per-server. Using them across other servers requires Discord Nitro.

Q: Can I generate animated emojis with this method?

A: No, this workflow generates static PNGs. Animated emojis require GIF/APNG assets.

Q: Why are my emojis blurry?

A: Downscaling issues occur when facial features are too small relative to the 1:1 canvas. Focus on head-and-shoulders framing and bold line work.

Start generating your server's custom emoji set today on the PixAI Generator!