Hi, welcome to Skylanders Wiki! Thanks for your edit to the Stealth Elf page.
Elements to enemies
I know you're trying to be helpful with adding elements to enemies but I think you're doing it too much. You are correct with enemies like Bark Demons and Chompies, but some enemies, like Drow Archers do not have an element and you are just guessing.
In fact, I'm not sure you're supposed to do this. SkylanderFanFromFinland has asked you not to do this, so I recommend you stop.