Possible Clues:

• What a complex way to get us wet at last!
• The ode is up in complex confusion
• '-- Rex'
• Jocasta's son
• Sphinx bester
• Legendary Greek king with mother complex
• Father of Antigone
• Fish about in work to find king
• A problem for the young lad developing close-up demo pix
• Complex man turned up inside one's dictionary first