What is "madfrog"

Fredrik Johansson (born September 26, 1984), better known by the pseudonym MaDFroG, is a Swedish Warcraft III and StarCraft II player.

He is considered one of the best and most influential players of the Undead race. He has been successful in a wide number of tournaments and is popular for his unique and ingenious gameplay, which earned him a devoted fanbase. His excellent use of gargoyles against the night elf race is one of his most feared abilities.

Fredrik Johansson is featured in the documentary film Beyond the Game.