Kullen himself is the reserve champion of the BWP approval. Kullen's father Clarence C jumped very successful the young horses competitions before he had to be withdrawn out of the sport after an injury at the age of seven. Clarence comes out of the same mother than Casall and his first breeding years look very promising. Out of a limited quantity of foals he was already the sire of the vicechampion of as well BWP as the Brandenburg approval. Kullen's mother is bred by Corofino. Corofino I himself performed in the international show-jumping with Valerio Sozzi. Corofino I is also known as one of the best sires within the Holstein breeding. Kullen's grandmother is the full sister to Cassini. Cassini was very successful under Franke sloothaak and is the father of Cumano, Berlin, Cabrio van de Heffinck,.. Kullen's mother is the half sister of the Holstein approved Lasino, who signed for the paternity of, among others, Last Man Standing, Luminus and Restless,.. His grandmother is also the half sister of Mira VI, mother of Cassaro. Cassaro is approved in the Holstein stud book and made international tour with Janne Friederike Meyer. Also Kullen's mother herself guarantees international jumping horses. Her first foal was Silvertras and immediately successful. This 10-year-old son of Quantum and Monata finished 2nd in the Grand Prix of CSIO 5 * Drammen, 2nd in the Grand Prix of CSI Arezzo, ....