Did these last night. Been thinking in depth a lot about his design and I wasn't happy with where it was going. There was substance but I feel like I'd have been disappointed if I continued with it. So instead I sat down (or technically just sent a few messages over discord) with some friends and discussed his story and his design to get some feedback. After a while I got a load of ideas and how I want his design to come about.
I thought more of his story too, this other God he fought was his brother, that yearned for the attention Phaedrus got. Idatrus was his brother and was only ever in his shadow. Phaedrus was a mighty god, both proud and kind and he was revered the world over by gods and humans alike. Idatrus spit his charmed venom at those around him, eventually turning everyone against Phaedrus and had tricked the other gods into imprisoning him in the great volcano. Not before a fight ensued between Phaedrus and Idatrus though, and weakened by the scorned words of both mortal and immortal men, had Idatrus' sword plunged into his heart and locked away.
I like where it's going! Here are some rough traditional sketches I did and will work on some more design sheets of his newer design. In particular, I wanted the outside to show that he is a broken and defeated god. I've had a lot of feedback on people saying he looks sinister or evil, but that isn't what I want to go for. Phaedrus was betrayed and hurt by those closest to him, and even being a god he suffers much pain. I want to be able to express his pain through his design and actions!
Some friends had a good idea of instead having actual armour, he should have bits of broken parts of him forming around him acting as some sort of crude barrier, and the only thing left of his once decadent and prideful self is his crest that is now falling apart and letting all his fire out.