Generate a realistic and highly detailed full-body image of a male character, with flowing white hair and a beard, exuding a regal and commanding presence. He should be wearing traditional robes with ornate, golden adornments, conveying nobility and strength. Include a giant sword in his hand as a symbol of authority. The background should be a futuristic cityscape with high-tech elements, possibly hinting at a blend of ancient tradition and advanced technology, all under a twilight sky.