The special symbols that can be used in the name of World of Warcraft without being illegal are 丨 (dian) 丨 (huo) 丨 (shu) 丨 (pie) and so on.
other special symbol styles:
gang, shu, shu, du, dan, bao, wen, liang,
Du.
Extended information:
World of Warcraft name specification
One or two word names of World of Warcraft are illegal. In the game, players whose names do not conform to League of Legends id format are officially listed as illegal. If they are found by the system, they may be forced to change their names or even be banned.
players can use some non-universal characters in foreign languages (such as Korean) as blanks, which will be displayed as two words, one word or even no words in the game, because these foreign characters cannot be displayed in the game.