Globules or globs were football-sized bio-machines programmed to act as security guards on Justice Prime. They could cover and stick to prisoners, levitate to escort them through the facility, or leech their energy if they were trespassing into forbidden areas. Their programming limited their power to the point where the victim could be apprehended without killing them. Two Slitheen killed a pair of globules and turned them into skin suits while attempting to escape from the prison. (PROSE: The Monsters Inside)