User blog comment:Martialmaniac/Kakin Royal Family names/@comment-32818639-20180312162710

There are 3 different ones:
 * The normal equal sign (=).
 * The full-width Roman character version (＝).
 * The katakana version (゠).

Visually speaking, I think Togashi usually uses the first or the second because they are more visible, but the third is the most correct (although curiously, if I remember well, this version is not used in Japanese blogs and forums [keyboard reasons?]). I had put the katakana version on Hisoka's page, you can compare it if you want.