So im trying to make a pony villian name out of the term Janus-faced which means "having two sharply contrasting aspects or characteristics". Does anyone have any ideas?.

contrariorum? Latin for opposites (Mind you a pretty lazy attempt on my behalf)

The best villain names are often the simplest. Duality.

Parallel?

Frosty Pyre?

Mellow Blaze?

Do I have the right idea or am I spouting nonsense?

7293806
Why not just use Janus?

7293806
Janus

7293813
I wanted to make something clever lol but I guess i can just use Janus

Two Face.
Double Time.
Dual Tool.
Both Sides.
High Low.
Inside Out.
Right Left.

7293806 Contrast.

7293822
Sometimes simple is better!

7293824
Nah you know what's better than Two Face? One Face

7293806

Flip-Flop

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Yin-Yang?

7293806
Create a character who seems to have two distinct personalities (a Jekell-Hyde type of thing): one who is a good guy and one that is the villain. Have them seem to be totally different characters, from their personality to their appearance (You can make them as distinct or similar as you want), but drop hints here and there of them being one person before you make the big reveal.

One example I know of for this being done well is Masquerade from the first Bakugan series.

7294285
Thanks for the advice

7294431
You're welcome. Good luck on your project.

I named an Ettin OC of mine Descartes because of Dualism... it was partly because I intended him to be more of an Anti-Hero than a card carrying villain. I later created a foil character to him that was named Spinoza...

You could also call him Sock N. Buskin...