The Teeny Pony Twins were introduced in Year 10 of the My Little Pony line. They were a second set of the Teeny Tiny Ponies that were introduced to the line in Year 9, this time featuring twins with matching symbols, body, and hair colors. The only way to tell them apart is by their different poses and a small symbol on their cheek, face, or leg.
The Teeny Tiny Ponies and Tiny Pony Twins are smaller than baby ponies and even tinier than the Newborn Ponies. They have short, stubby legs and chubby faces and bodies.