Place of Origin:
The Happiness Patrol
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Susan Q was a member of the Happiness Patrol that initially arrested Ace. Susan confided in Ace of the troubles she faced under the ruling of Helen A, and eventually freed Ace. After Susan Q was arrested for this crime, she was sentenced to death alongside the quickly-captured Ace. They were saved by the Seventh Doctor.
After escaping, Susan Q helped them overthrow the Happiness Patrol. Once the rebellion had succeeded, she and Earl Sigma set about changing their colony for the better. (The Happiness Patrol)
She used a Fun Gun to help Ace and the Doctor in their rebellion against Helen A. (The Happiness Patrol)