Uncle Wilbert was the elderly uncle of Sally Acachalla and a former fireman. He spent his entire life in fear of fires and carried a fire extinguisher with him at all times. During one visit, the extinguisher created a space/time rift that caused his heart to fail.
- He carries a fire extinguisher around and lives in a swimming pool due to his fear of fire.
- He sprays random things with his extinguisher and can sometimes break the space-time continuum.