"Kek", from "kekeke"/"ㅋㅋㅋ", a Korean onomatopoeia of laughter employed equally to "LOL", may be the Korean equal of your English "haha". Since this is commonly used in StarCraft matches, Blizzard, Starcraft’s developers, decided to reference it in World of Warcraft (2004): whenever a participant in the Horde faction forms "lol" https://steveu011xtm5.wikiannouncement.com/user