Talent Scout

The Eleventh Doctor and Alice Obiefune encountered a portion of an Entity on Rokhandi. August Hart had it caged in the Rokhandi World amusement park. It fed on a lifeform's desire to cause trouble, making them docile. Hart was feeding people to it to make them obedient park employees.

When the Doctor was fed to the Entity, it could not process the Time Lord and was destroyed. The employees were restored and staged a revolt against Hart. The rest of the Entity was also damaged by the fragment's destruction. (COMIC: The Friendly Place)