I can't say. Haven't touched Destiny, and I'll live a full, happy life without it (lol jk I use these forums what a low life amirite guys). In terms of raw strength, I'd have to say the strongest enemy I've ever faced was Majora, because he was capable of bringing the Moon out of orbit, and (presumably) surviving the impact. The [i]Toughest[/i] battle I've ever had, however, is a different story, but from the same franchise. Dark Link from Zelda II: The Adventure of Link was nothing short of a nightmare, because it was like fighting a mirror that would counter your attacks at any given opportunity. It didn't help that he was at the end of a Palace that can only be described as Hell on Earth. Definitely a game I recommend playing through if you want a real (gaming) challenge.