|Planet of Origin:||Earth|
|Original era:||20th Century|
|First Appearance:||The Gloom of Aquanus|
|Last Appearance:||The Marathon Pursuit|
|Portrayed By:||Jeremy Brett|
Bart enthusiastically joined the Inspector's travels along with his colleague, the mathematics teacher Irma Rong, and had numerous adventures together. Eventually he married Irma, and they decided to leave the Inspector and explore Earth's 25th-century galactic empire when they came into possession of a Blorgon time/space machine at the end of the serial "The Marathon Pursuit".