Footclan from the old TMNT arcade games especially when the difficulty was cranked up to the hardest level, I consider stages enemies sometimes so all stages of levels 6 to 8 on Super Mario Brothers 3, the laser guy you can't kill on Galaxy, Chainsaw dude from RE4, and Pokey from Earthbound.
MaxwellGT2000 - "Does the amount of times you beat it count towards how hardcore you are?"
Wii Friend Code - 5882 9717 7391 0918 (PM me if you add me), PSN - MaxwellGT2000, XBL - BlkKniteCecil, MaxwellGT2000