A deformable toy deformable from a first form to a second form different from the first form includes: a first component; a second component; a holding mechanism provided in the first component and capable of holding the second component in a first position; and a release mechanism provided in the first component and capable of releasing the second component from the holding mechanism by vibration. The second component released from the holding mechanism by the release mechanism is moved from the first position to a second position different from the first position to deform the deformable toy from the first form to the second form.