Weeba Weeba

This character was present in Jabba's Palace when Han Solo was liberated from his Carbonite block. It was a possible nickname for Malakili, Giran or Nizuc Bek since it's not known for sure who Weeba Weeba actually was.

Behind the Scenes
Leland Chee stated that this is a nickname for one of the Rancor Keepers. Since all of them have a name it can be no other that this production name is just a nickname.

Appearance
Return of the Jedi