> Quick answer: Find the best alien emoji GIFs and convert them to custom Slack or Discord emojis with AnimGifMoji — free, instant, no account needed. It automatically resizes alien GIFs to 128×128px and compresses under 128KB for Slack, or under 256KB for Discord.
Alien emoji GIFs bring an out-of-this-world energy to any Slack channel or Discord server. Whether you're reacting to a wild idea, celebrating a mind-blowing achievement, or just want to inject some cosmic weirdness into your chat, a well-timed alien emoji GIF lands perfectly every time.
In this guide, you'll discover the best animated alien emoji GIFs, learn how to convert them for Slack and Discord, and get pro tips for using extraterrestrial emojis in your day-to-day conversations.
Why Alien Emoji GIFs Are So Popular
The alien emoji 👽 has transcended its literal meaning to become one of the internet's most versatile reaction emojis. In chat culture, it signals a range of emotions: amazement, disbelief, "this is too weird to comprehend," and even affectionate weirdness between friends.
Animated alien emoji GIFs take it a step further. A blinking, waving, or UFO-abducting alien GIF delivers impact that static emoji simply can't. The movement draws the eye, amplifies the reaction, and often gets a laugh or reaction of its own.
The alien emoji GIF has also become shorthand for:
- "This is otherworldly good" — praising exceptional work
- "I don't understand any of this" — reacting to complex technical discussions
- "We're not normal and we love it" — team culture expression
- "Mind = blown" — reacting to surprising news
In Slack, alien custom emojis are especially popular in tech companies, gaming teams, and creative agencies where workplace culture leans playful and expressive.
> ℹ️ Did you know? The alien emoji 👽 was approved as part of Unicode 6.0 in 2010 and has been a top-10 emoji in tech Slack workspaces ever since. Animated GIF versions are searched over 100,000 times monthly across Tenor and GIPHY combined.
Best Alien Emoji GIFs for Slack
When choosing alien emoji GIFs for Slack, look for GIFs that are:
- Short loops (under 3 seconds) — they compress smaller and feel more like emoji
- Square or close-to-square — easier to resize to 128×128px without distortion
- Clear subject — the alien should be immediately recognizable at small sizes
- Not too busy — simple animations look better at emoji scale
Top alien GIF categories that work well in Slack:
1. Classic grey alien wave — The quintessential alien emoji. A slow, deliberate wave from a big-eyed extraterrestrial. Perfect for greetings, sarcasm, and "hello from outer space" reactions.
2. Blinking alien — An alien face with slow blinks. Conveys skepticism, processing information, or the feeling that something doesn't quite compute. One of the most used alien emoji subtypes.
3. UFO abduction — A tiny person getting beamed up into a flying saucer. Great for reacting to someone being pulled into a new project, a meeting that feels like a trap, or an unexpected deadline.
4. Dancing alien — An alien doing a little shuffle or groove. Perfect for celebration channels, Friday reactions, and any moment that deserves extraterrestrial enthusiasm.
5. Alien face spin — A rotating 3D alien head. Eye-catching, slightly unhinged, and perfect for chaotic moments in busy Slack channels.
To use any of these in Slack, you need to convert the GIF to a custom emoji first. The next section walks you through the exact steps.
How to Convert Alien GIFs to Custom Slack Emojis
Converting an alien GIF to a Slack-compatible emoji is straightforward with AnimGifMoji. Slack requires custom emojis to be exactly 128×128 pixels and under 128KB — AnimGifMoji handles both automatically.
- Find your alien GIF — Search Tenor (available directly at AnimGifMoji), GIPHY, or any GIF source for "alien emoji gif", "alien waving gif", or "UFO animated gif"
- Open AnimGifMoji at animgifmoji.com
- Drop your alien GIF onto the converter — drag and drop or click to browse
- AnimGifMoji automatically resizes to 128×128px and compresses under 128KB
- Download the converted emoji file
- In Slack, go to Settings & Administration → Customize Workspace → Emoji → Add Emoji
- Upload the file and give it a descriptive name like
:alien-wave:,:alien-blink:, or:ufo-abduct:
> 💡 Tip: Name your alien emojis descriptively so teammates can find them. :alien-wave: is much more discoverable than :emoji47:. Use consistent naming like :alien-[action]: for a cohesive emoji set.
The entire process takes under 60 seconds. AnimGifMoji runs entirely in your browser — no account required and no files are stored on its servers.
Best Alien Emoji GIFs for Discord
Discord gives you slightly more file size headroom than Slack — up to 256KB for custom emojis versus Slack's 128KB limit. This means you can use higher-quality alien GIFs with more frames, smoother animations, and richer color gradients on Discord.
Top alien GIF picks for Discord:
1. Neon alien — An alien rendered in bright neon colors — green, pink, purple. The vivid palette stands out in dark-mode Discord channels and pairs perfectly with gaming aesthetics.
2. Pixel alien — 8-bit or 16-bit style alien sprite animations. A nod to retro gaming culture, pixel alien GIFs are extremely popular in gaming Discord servers.
3. Alien head bobbing — A minimal alien face that bobs up and down in a smooth loop. Simple but satisfying, and compresses to a small file size even at higher quality.
4. Space helmet alien — An alien in a space suit, floating in zero gravity. Great for sci-fi servers, space enthusiast communities, and anyone who needs a dramatic reaction GIF.
5. Alien typing at a computer — Perfect for developer Discord servers. An alien pecking away at a keyboard captures the feeling of late-night coding sessions or incomprehensible technical processes.
> ⚠️ Warning: Discord animated emojis from other servers require Nitro to use. However, uploading animated alien GIFs to your own Discord server is completely free — no Nitro needed. AnimGifMoji prepares your alien GIFs for either use case at 128×128px and under 256KB.
How to Upload Alien Emojis to Discord
- Convert your alien GIF using AnimGifMoji — it outputs at 128×128px and under 256KB for Discord
- Open Discord and navigate to your server
- Click your server name in the top-left → Server Settings
- Go to Emoji in the left sidebar
- Click Upload Emoji
- Select your converted alien GIF file
- Set a name (Discord auto-fills from the filename — edit it to something like
alien_waveorufo_abduct) - Save — your alien emoji is now available to all server members
For Discord, alien emojis can be up to 256KB and 128×128px. AnimGifMoji optimizes within these limits automatically.
Platform Requirements Comparison
| Platform | Max Size | Max File Size | Animated GIFs? | Free to Upload? |
|---|---|---|---|---|
| Slack | 128×128 | 128KB | Yes | Yes (workspace admins) |
| Discord | 128×128 | 256KB | Yes (own server) | Yes (no Nitro needed) |
| Teams | 128×128 | 1MB | Yes | Yes (admin approval) |
| 512×512 | 500KB (stickers) | Yes | Yes (via sticker packs) | |
| Zoom | 128×128 | 500KB | Yes | Yes (host controls) |
AnimGifMoji targets Slack's strictest requirements (128×128px, 128KB) by default — which means your alien emoji will also work on Discord, Teams, and Zoom without any issues.
Alien Emoji GIF Varieties
The world of alien emoji GIFs is surprisingly rich. Here's a breakdown of the main varieties you'll encounter:
By alien type:
- Classic grey alien — The Roswell-style extraterrestrial with large oval eyes and grey skin
- Green alien — The classic pop culture depiction from 1950s sci-fi
- Kawaii alien — Cute, rounded alien with big eyes and minimal features
- Neon/cyberpunk alien — Futuristic aesthetic with glowing outlines
- Pixel alien — Retro 8-bit game sprite style
By animation type:
- Waving — Friendly, used for greetings and goodbyes
- Blinking — Skeptical, processing, or caught off guard
- Dancing — Celebratory, joyful, Friday energy
- Floating/bouncing — Gentle loop, zero-gravity vibe
- UFO/abduction — Situation-specific, often used humorously
- Spin — Chaotic, attention-grabbing, meme energy
By use case:
- Reaction emojis — For reacting to specific messages
- Status indicators — Custom alien emoji for specific projects or moods
- Channel icons — Used in Slack/Discord channel names with the emoji
> ✅ Pro tip: Create a matching set of alien emoji GIFs — at least a wave, a blink, and a dance — for maximum expressiveness. Label them :alien-wave:, :alien-blink:, and :alien-dance: for easy recall. Teams with cohesive emoji sets have higher emoji usage rates.
Creative Ways to Use Alien Emojis in Chat
Alien emoji GIFs aren't just for general reactions. Here are specific ways to deploy them in Slack and Discord conversations:
In Slack:
- :alien-wave: as a team greeting — Set it as a welcome reaction for new team members joining a channel
- :alien-blink: for confusion — React with the blinking alien when a message doesn't quite make sense
- :ufo-abduct: for sudden absences — When a teammate goes quiet unexpectedly, the UFO abduction alien says everything
- :alien-dance: for wins — Celebrate a shipped feature, closed deal, or successful sprint demo
In Discord:
- As a role indicator — Assign the alien emoji to a "🛸 Out-of-this-world contributor" role
- For sci-fi themed servers — Build out an alien emoji set as the default reaction palette
- For "mind blown" moments — React to impressive art, code, or game plays with the alien emoji
Cross-platform:
- Many teams use the same alien emoji set across Slack and Discord (converted separately for each platform's requirements)
- AnimGifMoji makes this seamless — convert once, download, then upload to each platform
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- Browse more alien GIFs on our Tenor search page
- Try our free GIF to emoji converter
Frequently Asked Questions
What is the best alien emoji GIF for Slack?
The most popular alien emoji GIFs for Slack are animated versions of the classic grey alien 👽 with blinking eyes, UFO abduction sequences, and alien waving GIFs. Convert any alien GIF to a Slack emoji at 128×128px and under 128KB using AnimGifMoji — free and instant.
Can I use animated alien emojis on Discord without Nitro?
Yes — you can upload animated GIF alien emojis to your own Discord server for free without Nitro. The emoji must be under 256KB and 128×128px. AnimGifMoji resizes and compresses alien GIFs automatically. Using animated emojis from other servers does require Nitro.
What size does an alien emoji GIF need to be for Slack?
Slack custom emojis must be exactly 128×128 pixels and under 128KB in file size. Animated GIFs are supported. AnimGifMoji automatically resizes any alien GIF to these exact specifications — no manual resizing needed.
Where can I find alien emoji GIFs to convert?
The best sources for alien emoji GIFs are Tenor (searchable directly from AnimGifMoji), GIPHY, and Reddit communities like r/aliens and r/EmojisForSlack. Search for "alien emoji gif", "alien waving gif", "UFO gif", or "extraterrestrial animated emoji" to find quality options.
How do I add a custom alien GIF emoji to my Slack workspace?
First, convert your alien GIF using AnimGifMoji (animgifmoji.com) — it resizes to 128×128px and compresses under 128KB automatically. Then in Slack, go to Settings & Administration → Customize Workspace → Emoji → Add Emoji, upload the file, and set a name like ":alien-wave:".