Bustler is out of the three-time winner Cosmah Domination (Oratorio) and is a half-brother to A Lot Of Good Men (A Lot), stakes-placed in Australia as runner-up in the Gr.2 West Australian Guineas. Cosmah Domination is a half-sister to Amelia Storm (Stormy's Son), a six-time winner who was third in the Listed Kalgoorlie Boulder Cup.

Second dam Mia Myth (Don't Say Halo) was placed.

Third dam Lucky Liz (Curravilla) won three races. Several of her half-siblings won, the best of them Kate's Myth (Kaoru Star), winner of the Gr.2 Matamata Breeders' Stakes, and Speedy Kids (Snippets), winner of the Gr.3 Thoroughbred Club Stakes. Kate's Myth is the dam of the dual Group 1 winner Mythical Play and of Falls The Shadow, a Listed winner twice placed at Group 1 level.