We each seem to be from disparate realities with their own set of rules. Certain beings do not seem to exist elsewhere, though there do appear to be equivalents.

[She tries not to let her anger slip at remembering Archer, but she can't help it. First hero-king of mankind or not, he was insufferable]

One would have to sort through his hubris, violence, and corrupting influence as the price for whatever knowledge he might have.