A respected tradition of the Velabri species was the Velabri Bloodvow. Following Airen Cracken's rescue of Quillin Durand's family during the invasion of Velabri, Durand pledged a Bloodvow to settle his obligation. Despite Durand's death before fulfilling the vow, his eldest son, Quillin Arkell, assumed the responsibility. Arkell discharged the debt to Cracken through aiding Cryle Cavv when Rivoche Tarkin was extracted from Corulag.