Sven

aka Ashen Knight

San came across sven in an alleyway after fleeing some shadow demons. After a brief conversation and actually treated as a friend by san, sven escorted him to the borders and even helped him on his quest of redemption when he returned.

During star dust, he fought the captain of the Avarian space pirates and helped his fellow knights and the senshi break the barrier that loomed over earth, blocking the sun as well as fight against the pirates themselves.