From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Bonpara appeared in "Whisker Power". He was one of the three Para brothers, along with Donpara and Sonpara, and often spoke on behalf of the trio. After Son Goku, Pan, and Trunks Brief seemingly secured a Black Star Dragon Ball, the Para brothers appeared mysteriously and stole the artifact from the group. In their haste to track down the thieves, however, the Saiyans found themselves tricked into landing on a dangerous asteroid. Meanwhile, the Para brothers presented the Dragon Ball to their bizarre leader, Lood – unbeknownst to them a Machine Mutant.
 Special abilities
Being the de-facto leader of the three, Bonpara possessed a boombox, while his brothers Sonpara and Donpara flanked him with their lightshow devices in tandem with Bonpara's boombox to cause anyone in the range of the mesmerizing light and hypnotic beats to dance uncontrollably.