Donald and his brother Douglas are twins. Donald hates to be parted from his brother, and loves to play practical jokes on the other engines. Donald and Douglas love to play practical jokes, especially impersonating one another. They were fitted with nameplates to specifically end this element of their humour. Donald′s eyes move as he rolls down the tracks.WARNING: This product can expose you to chemicals including LEAD, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov