Castiel is going to make everyone think you're a huge fan of Supernatural. It's also a bit ridiculous for my tastes. Same for Quinn and Glee. Unless you're tv superfans and it's a deliberate homage, I wouldn't be going for either of those.
Icarus - a man whose terrible arrogance led him to die. That would put me off.
Ignatius is the best of them but still really out there.
Honestly (and I am being honest because it's mumsnet) if I heard any of these names in real life I would have a serious eye roll at how try-hard they are. I'm not saying you definitely can't style that out, but it is going to be hard!
If you like roman / mythological names, how about:
Cyrus
Magnus
Marcus
Felix
Remus
Aloysius
Cosmo
Julius
Rufus
Some of those are still pretty out there if that's what you're after, but more reasonable names imo.