"Kek", from "kekeke"/"ㅋㅋㅋ", a Korean onomatopoeia of laughter used similarly to "LOL", may be the Korean equivalent of your English "haha". Since this is commonly Utilized in StarCraft matches, Blizzard, Starcraft's developers, chose to reference it in World of Warcraft (2004): when a player from the Horde faction styles "lol" https://crowfooty007uho6.wiki-jp.com/user