Illustrious does a rather decent job rendering Odin's back... considering there were no back shots in the dataset.
Prompt with:
pd0d1n,
also, you can prompt with either:
green outfit, red outfit, blue outfit,
and also:
dark skin, dark-skinned male,
He has a bird/raven, summon it with:
bird, bird on shoulder,
^ lol, I'm sore for that one, I didn't really know what to make of it.
Notes: Is not necessary to prompt for his "eyepatch", but if your checkpoint is not rendering it correctly you can reinforce it in the prompt.