Portrait of a youthful Fred from Scooby Doo, wearing a sleek white jacket, his blonde hair perfectly styled, exuding strength and confidence. The image is digitally crafted with sharp focus on the single subject, incorporating dynamic lighting and a rich color palette. The concept art is meticulously detailed, enhanced through expert post-processing, resulting in an ultra-realistic render that captures Fred's charismatic and adventurous spirit in a fresh, modern style.