Anywhere text is accepted: Instagram bios, TikTok names, Discord, WhatsApp, gaming profiles and documents. The full Bold Gothic alphabet is linked above.
What is the Bold Gothic letter K?
It is the letter K rendered as the Unicode character ๐ถ (code point U+1D576), part of the Bold Gothic styled alphabet. It is a single character you can copy and paste anywhere.
How do I type ๐ถ on my phone or computer?
You do not type it from a keyboard; you copy it. Press the copy button above and paste it into any app. That is the whole point of Unicode styled letters.