Mischief]] was a former recurring character of The Dumping Ground. The duration of his appearance was from Mischief (episode) (3x04) until Miscreants, Robots and Bullies (5x02).
Mischief did previously belong to a homeless man before Bailey Wharton felt bad for his death so decided to look after Mischief and managed to convince Mike and May-Li to let him keep the dog.