Fredrik "H@££INGGOL" Halling is an online legend.
He was one of the very first players to reach SuperNova on Pokerstars. He was really dominating the NLHE mid stakes a few years ago. Halling was famous for his über aggressive style, which wasn't nearly as common at that time.
Hallings trademark was fearless huge bluffs and playing extremely deep, he accomplished the last part by playing well, putting loads of pressure on his opponents, but also by using a reload glitch that existed on Pokerstars back then, that allowed you to reload 100 big blinds once you were all in, even if you won the pot. According to a 2+2 thread he was sitting with a $100K stack on a NLHE $10/20 table.
Halling hit a rough patch somewhere along the way, but is now back at Pokerstars, playing $100/200 PLO.