GrammarKing

GrammarKing is an older Twitch face Global showing a man in bright yellow-orange sunglasses. Taiwanese Hearthstone viewers gave the unidentified portrait a second identity in 2016 because they thought it looked like streamer 鋼琴殺手, commonly called 鋼哥 or `Piano Killer`. A May 2016 discussion described the resemblance as `87%` and records viewers spamming GrammarKing around the comparison.

The joke expanded into 鋼哥's deck-building reputation. He regularly climbed toward Legend with all nine Hearthstone classes and shared lists whose names began with 鋼琴殺手. Other streams joked about copying his decks, and the rhyme `天下武功出少林，爐石牌組抄鋼琴` turned that reputation into a community catchphrase. GrammarKing became the chat symbol inserted into those 鋼哥 and deck-copying jokes.

The resemblance never proved that 鋼哥 was the man in the original photograph.

Viewers type GrammarKing for grammar and wording jokes. In Taiwanese Hearthstone culture, it also functions as a 鋼琴殺手 callback around his streams, deck lists and jokes about copying his decks.