I have to admit, I've never played Euro Extreme. I settle for regular Extreme. To this day, my favorite Extreme boss battle has been Vulcan Raven. I really think that's how he was meant to be fought. "That's right, you belong on the ground. You belong on the ground like the snake you are!" Chit, imagine being chased by someone that large. Fatman and The Fury's battles were good successors (the fury's coming in a close second), but nothing beats the heavy stomps and breaths of a dude that eats whale blubber for fun.