Beheeyem is a humanoid creature that appears to be based on an extraterrestrial life-form. Its head is bell-shaped with a saucer-shaped bottom part, and a long rounded forehead with two indents on either side. It has Y-shaped symmetrical black markings on its forehead. It has goggle-like glowing green eyes with small black pupils. It has a long body and appears to be wearing a brown trench coat with a lighter brown collar-like formation around its neck, and four button-like dots on its torso. It has stubby legs with no feet or digits. Its has large hands with three glowing red, green, and yellow dots. It illuminates the luminescent dots on its hand to communicate.
The communication through lights and sound on the colored fingers could be a possible reference to close encounters of the third kind, where they used lights and beeping sounds to communicate with the aliens, further showing the possibilities of this Pokémon being an alien.
Also in the anime, the Beheeyem have a spaceship considering that they are aliens.
Beheeyem is based on an extraterrestrial life-form.
Beheeyem's name makes the sounds of the letters B.E.M, which stands for; Bug Eyed Monster, a term some people used for aliens in alien sightings.