Rabsca is a teal, metallic, beetle-like Pokémon that perpetually floats upside down in the air. Its face is red, with a diamond-shaped nose, a white four-pointed star on its forehead, and long, prominent white hairs that extend past its body, resembling eyebrows and a mustache; the latter also somewhat resembles wings. Its eyes have pink sclerae and white pupils shaped like four-pointed stars, but they are usually closed. It has four limbs, each with three spike-like protruberances. It has four horn-like protrusions on its head, a zigzag pattern on its abdomen, and an elaborate pattern of red stripes on its back.
Rabsca's hind legs hold a ball over its body. The double-layer ball is reddish pink with purple cloud-like masses surrounding it, and it can glow brightly, revealing a cocoon-like infant sleeping inside. Rabsca gently rolls the ball with its legs so that the infant inside can sleep comfortably. A hypothesis posits that the infant is actually Rabsca's true body, since the body that rolls the ball around barely moves. In Generation IX, Speed Swap is its signature move.
Rabsca appears to be based on a scarab beetle, particularly resembling the sacred scarab. It may also be based on Khepri, an Egyptian scarab-faced god who represents the rising or morning sun, and by extension, creation and the renewal of life. This seems to be represented by Rabsca learning Revival Blessing.
The grey moustache and hair Rabsca grows makes it resemble an old man, which invokes the idea of a monk or guru who has achieved enlightenment through lifelong training and meditation (which can even be done upside-down). The white star on Rabsca's forehead resembles an Urna.
According to the Pokédex, Rabsca's ball contains an infant — this appears to be a reference to dung beetles and some scarab beetles laying their eggs in a ball of dung to incubate them and feed the hatching larva. The ball being a red, translucent bubble suggests it is meant to be an amniotic sac, a thin membrane that holds a foetus while it develops in the womb.
Rabsca may be derived from scarab with the syllables transposed. It may also pull from Ra, the Egyptian sun god sometimes associated with scarabs.
Beracas may be derived from スカラベ sukarabe (scarab) spelled in reverse.