Ares/Mars is Lord Andras as far as I know. And Hades/Pluto is Lord Nergal.
There is not one demon for one planet. There are too many gods/goddesses who rule over Mars. But mythologically, while Hades is Lord Nergal, Ares is Lord Andras. I might be mistaken though, that's just what's in my memory.
One more example, I was supposing that Sol Invictus/Helios is Lord Sorath, but it's revealed these figures are corresponding to Lord Azazel.
There is not one demon for one planet. There are too many gods/goddesses who rule over Mars. But mythologically, while Hades is Lord Nergal, Ares is Lord Andras. I might be mistaken though, that's just what's in my memory.
One more example, I was supposing that Sol Invictus/Helios is Lord Sorath, but it's revealed these figures are corresponding to Lord Azazel.