Hangul Filler U+3164

The Hangul Filler (U+3164) is a placeholder character from the Korean Hangul writing system. It shows nothing, yet Unicode classifies it as a letter, not whitespace.

That is why it works where other invisible characters fail. Apps that strip spaces and zero-width characters usually check only for whitespace, so Hangul Filler gets through to make invisible Among Us names, blank tweets on Twitter/X, and empty usernames.

How to Get an Invisible Name in Among Us

1. Copy the character. Click the copy button at the top of this page.
2. Open Among Us on PC, mobile, or console.
3. Open name settings. Click your player name at the top of the screen or in the settings menu.
4. Delete your current name completely.
5. Paste the character. Press Ctrl+V (Windows), Cmd+V (Mac), or long-press and tap Paste (mobile).
6. Confirm. The field looks empty. If the game accepts it, other players see a blank name above your character in the lobby and during gameplay.

Troubleshooting

• "Name must be at least 1 character." The paste didn't take. Copy the character again from this page.
• Name shows as a square or box. Your font doesn't render it as blank. Other players' devices may still show nothing.
• Name shows the old name. Delete the previous name completely before pasting.

Common Uses

• Invisible Among Us names. The most recommended method.
• Blank tweets on Twitter/X. Paste it as the tweet text.
• Empty usernames where spaces, NBSP, and zero-width characters get filtered out.
• "Required field" checks. Forms that need at least one character accept it while it looks blank.
• Korean syllable encoding. Its original purpose in the KS X 1001 character set.

How to Type

Platform Compatibility

Based on user reports, not official platform documentation. Platforms change their filters often, so test first.

Why It's a Letter, Not a Space

Hangul syllable blocks are built from three parts:

1. Choseong (initial consonant)
2. Jungseong (medial vowel)
3. Jongseong (final consonant, optional)

In KS X 1001, the Hangul Filler marks the start of a syllable spelled out from individual jamo (letters) and fills any of those three positions that is empty. Because it stands in a letter position, Unicode classifies it as a letter (Lo = Letter, Other).

Unicode also marks it as a Default_Ignorable_Code_Point, which is why many renderers show nothing.

Technical Details

• Unicode category: Lo (Letter, Other), not Zs (Space Separator) or Cf (Format).
• Bidirectional class: L (Left-to-Right), like a regular letter.
• Width: East Asian Width is Wide, but as a default-ignorable character, many renderers draw it as zero-width or a blank gap, depending on the font.
• Word break: Treated as a letter.
• Line break: Treated as an ideographic character.

To check for it in JavaScript:

text.includes('\u3164')// or check Unicode category/\p{Lo}/u.test('\u3164') // true - it's a letter/\p{Zs}/u.test('\u3164') // false - it's not a space

Security Considerations

• Bypasses "non-empty" validation in form fields, database columns, and API parameters, while displaying nothing.
• Creates invisible account names that are hard to search for, report, or moderate.
• Confuses name matching. Every Hangul Filler name looks blank, so you can't tell those users apart by name.

Hangul Filler vs Other Invisible Characters

If one fails on a platform, try the next one down the list.

How to Verify It Worked

1. Character count. If the platform shows one, it should read 1, not 0.
2. Submit the form. No "name required" error means the character is there.
3. Check in our tool. Paste the field's text into the Invisible Character Viewer on the homepage to see the Hangul Filler highlighted.
4. Use browser dev tools. On Discord or other web platforms, inspect the element and run el.textContent.includes('\u3164') in the console.