Si'tann was a male Vulcan who lived in the late 24th century and was a scientist and Vulcan master. He was a close friend of Robert Ba'dos, and when was Ba'dos and Kelly Yamashiro were slain in a failed warp funnel experiment in 2353, he took their infant son Jaden as his ward, acting as the boy's patron. He named the child Sovok, and raised him as his own son, instilling in him Vulcan philosophies and teaching him the Vulcan nerve pinch, as he hoped to have a proper Vulcan son. Si'tann encouraged Sovok to enroll first at the Vulcan Science Academy and then at Starfleet Academy.