To make your TikTok name appear invisible, copy any of these special invisible Unicode character and paste it as your nickname:
Invisible TikTok Name To Copy
Object Replacement: 
Arabic Fathatan: Ù‹
Hangul Filler: ã…¤
Blank Braille: â €
Note: TikTok may block some characters in future updates. Try different options if one fails.
Note: Invisible names may violate TikTok’s rules. Use at your own risk.