Originally Posted by 1NintendoFan
So, are there any real benefits to getting more than one character for each element? I feel like you wouldn't have any benefits of doing this and more than anything it would cause problems because you are trying to level up characters and having multiples would just make that more difficult.
Personally I think it's worth getting at least two characters of each element. If you're playing two-player it helps to have two characters with the same element since sometimes a section that requires a specific element will be difficult if both players don't have the same element. For example, some water-only sections require the character to physically go into the water and since you're tethered to the second player, not being able to bring the second character into the water limits the movement of the first player. I hope that made sense.
Plus the more characters you "collect," the more XP you gain. Also I think there's an elemental bonus for having more than one character of each element as well as other challenges to unlock.
Of course none of these perks really affect the gameplay itself but if you like two characters of the same element I say go for it.