The Hal alphabet was invented by Kim Godgul as an alternative script for English and other languages written with the Latin/Roman alphabet. It is an adaptation of the Hal, which is based on the Korean Hangul alphabet, and there is a one-to-one match between Hal and Roman letters.
More information about Kim Godgul's alphabets (in Korean)
http://chogul.tistory.com/
Baal, ColorHoney / ColorTokki, Geup-Simhangul, Godgul, Hal, Rohal, Sacgul, Simplebet