Create a full-length rendered image of a hybrid character inspired by Velma Dinkley, incorporating the silhouette of a male bodybuilder. Maintain the iconic costume elements, adjusting them to fit the new, muscular proportions. Design a vibrant background reflecting the essence of mystery and adventure, drawing inspiration from classic Scooby-Doo settings. Include elements like a spooky mansion or a dark forest, enhancing the overall atmosphere while keeping the character's playful yet intelligent vibe intact. Ensure the image captures a balance between strength and the classic charm of Velma's persona.
