Sire Ella fan Bokkum and Suske van Zweins. 
Grandsire (mothers side): Tyske- Ronja- Vrouwke-, Bauke fan Wildcroft.

Jasper is an honest, pleasant stallion who sometimes has his own vision of things. He is energetic and likes to work. According to his central research results in 1998, he should have some more length in the neck, but despite that he has enough charisma. His walk is good, and his trot and canter are very good. He’s a typical harness stallion and has a strong backhand with a good use of his hind leg. He is also a good performer under saddle.
His progeny are a uniform group of medium size who all tend to be built to the front. They have a well built upper body but tend to miss the length in the front legs. The loins and croups are well developed. The legs are hard and well placed. Their walk is spacious and powerful and the trot is regular, tactful, and well carried. They have a lot of strength in the backhand. Around 26% of his progeny were declared ster.