Are there different types of sage modes? Why are some sage modes evil and make the user violent like Jugo's clan and Kabuto's sage mode? And why is Naruto's sage mode "less dark" ? Are there different types of sage modes? They all use natural energy so shouldnt they be the same?
Yes there are different types of sage mode, depending on summons. But I think you're asking if there is like an evil sage mode. Well...to put in similarity terms: No. Sage mode is basically the opposite of when Naruto loses control over his tailed beast. You have to be in perfect control, and if you're not, you become literally an animal or stone, not some rampaging demon. Now this doesn't mean that Sage mode is only reserved for good guys. It really depends on the summon. If the summon you use is evil and wants to teach you sage mode for your evil reasons, by all means you can do that. Like Kabuto....and Orochimaru....