He has brown hair and brown eyes with a hat covering his hair, causing his hairstyle to be unknown. In the Pokémon Adventures Manga, his counterpart, Black, was shown without his hat once. His hair is shown to be messy without his hat. Hilbert wears a black and grey t-shirt underneath a light blue jacket with black pants. He also wears a red cap with a matching pair of shoes, and on his left wrist he wears a blue Xtransceiver. He carries a black and blue messenger bag with a large white Pokéball in the center. He also wears red and black high top shoes with white soles.