Invisible nickname generator for Free Fire

The invisible nickname is a combination of non-breaking spaces (like ㅤ U+3164, from the Hangul block) and rarely-rendered characters that the server accepts but that show up blank in the game. Since Garena keeps blocking repeated codes, the generator builds a new sequence with each click.

Important: the anti-fraud system may reject invisible names at times. If a code isn't accepted, generate another and try again. It's also worth mixing in 1 or 2 visible characters so you have some identifier during the match.