Gellert Grindelwald undergoes a significant transformation from his youth to his older years. As a young man, Grindelwald was described as having golden-blond hair and a 'merry, wild', and 'handsome' face. He had a triumphant trickery about him, which Harry Potter likened to the mischievous Weasley twins, Fred and George. Grindelwald was an extremely talented wizard and a natural born Seer, who had a vision of himself dominating the wizarding world. However, as he aged, his appearance and demeanor changed. His hair turned light blond and then grey, he grew a thin white moustache which he later lost, and his skin became somewhat wrinkled. Despite his aspirations and talents, Grindelwald's path diverged significantly from his youthful dreams, demonstrating the complexity and depth of his character.