Charmy Bee is an anthropomorphic black-and-yellow striped bee with yellow-and-black striped antennae, translucent sky blue wings on his back, and honey brown eyes. He also has exposed peach skin on his muzzle and arms, and a tiny black nose.

For attire, Charmy wears an orange vest with a bee emblem on the left, a yellow zipper, and a white collar resembling that of a polo shirt. He also wears white and orange shoes cuffed with black rings and topped with yellow zippers, white gloves with similar cuffs, and a black pilot's helmet with a dark pink rim, alongside orange flight goggles.

Good-shaped yet sloppy, Charmy is hyperactive, scatterbrained and not too bright. As a child, he loves to play above all else, and he can always be seen flying around energetically. When the team is receiving their first mission at the beachy Seaside Hill, Charmy is hovering around singing "Sea, sea, sea". However, he is also very friendly, lighthearted and cheerful. Due to his age, Charmy is not as skilled a detective as Vector or Espio, but he is nonetheless valuable to the team. It is possible he is also greedy like Vector, as they had dollar signs in their eyes when their client promised a large payment (Sonic Heroes), although, as children are prone to do, he may just be emulating Vector's behavior.