Viroko is a chestnut Dutch colt with a flaxen mane and multi-colored tail.
He was born on May 4, 2002, the day of the Kentucky Derby. This is appropriate since his mother is a granddaughter of the famous TB racehorse, Forli, who is also sire of Triple Crown winner, Forego. Forli is the grandsire of the dressage producing stallion, Prince Thatch, who stands in Germany. The mother, Stefani Janine xx, is in the Main Mare Book of the Oldenburg Verband.

The sire of Viroko is Iroko, the number one producer of jumpers in Holland and a new Keur stallion for the KWPN. He is being leased by Shooting Star Farm and is standing in the USA. Iroko continues to be the highest KWPN ranked producer of jumpers standing in North America. He joins the ranks of Roemer, Zeoliet, and Contango as being one of four Keur stallions ever imported to the USA.