Bunny Buns is the pet of Emily Dinsmore.
Season Two[]
Lionel Luthor giving Bunny Buns to Emily.
After Lionel Luthor moved Emily Dinsmore's clone to a secure facility, he gave her a bunny as a present. Emily named her new pet "Bunny Buns".
Season Three[]
A year later, Bunny Buns was still living with Emily, when Emily escaped from the facility. Bunny Buns was left behind when she left.