Bouncers are furry green floating orbs with thin black tails that live on the planets Ruusan and Sulon. Morgan Katarn, father of soon-to-be Jedi Master Kyle Katarn, discovers the creatures in the Valley of the Jedi on Sulon, naming them appropriately.
Bouncers apparently move with the wind, lifting flaps of skin to use them as sails to guide their bodies. They use rocks and other formations to bounce them high, gliding them through the air for travel. Bouncers are said to be attuned with the Force and can communicate with those who can manipulate it. They can also become hostile when exposed to massive amounts of energy from the dark side of the Force, such as Lord Kaan's thought bomb.
They communicate with other species by speaking into their minds.