Hi Zentrope! hehe, yapp, when I was on my early teens I painted many nudes and portraits, mostly focused on some mythological figure, such as this one. Back then it was in traditional media, such as oils, charcoal, watercolors and black ink :P
Ok, let me try to explain how he can be neither good nor evil/bad:
He is a god who always acts in behalf of his own interests, and sometimes it puts other gods in danger or harms them. Or the other way around, sometimes his acts can actually help them. It will all depend on what are his interests at the time. So, that’s how he can be both good and bad at the same time. This behavior depicted in my character is based on what’s found about Loki in real mythology, not something I made up. The Loki depicted on the movie THOR, however, is pure evil, and it doesn’t reflect the original one, I think.
I hope have been helpful :P But I can understand you question
And, just to complete, there are similar entities in different cultures; they present the same behavior of ‘duality’ as Loki. Actually the Myth in its essence, all sorts of gods, magic creatures, and so are basically the same, depicted in different cultures under different names. A nice author about such subjects is Joseph Campbell. I’m a fan of his work since a kid!