David

David is a member of the Red Shield. He works as an agent assigned to direct collaboration with Saya. He is also the ex-husband of Julia Silverstein and the new Second-in-Command of the Red Shield after Aston Collins' death.

Joining Red Shield
David was the sole survivor of a chiropteran attack on his special forces squad before joining the Red Shield. His father was also a member of Red Shield and was one of Saya's victims in the Vietnam incident. It is implied that he, along with Joel, a re the only members that are descended from a line of Red Shield operatives. David's red crystal item is a cross.

In Okinawa

Back in Okinawa, David occasionally visited the Miyagusuku household. He was assigned by Joel VI  to watch over Saya while she was awake, quoting that if the time comes, Saya needs to be under his care to be able to defeat Diva. He urges George to pass on Saya to his care, and George does this without any question. George seems to trust David in terms of taking care of Saya, also considering that David's father  was his lieutenant during the Vietnam War.

After The Red Shield HQ Destruction

Half a year after the destruction of the Red Shield's headquarters, David continues his mission as a shield to eradicate the chiropterans. During the investigations into one of Cinq Flèches's lab, he finds Julia and she tells him something about the research they are doing. He talks to her briefly again at Amshel's  party, and lets her know that she will always be welcome back with the group.

In New York

Towards the end of the Blood+ series, the North Tower of the World Trade Center's lobby is being robbed by 7 gunmen in ski masks, who were about to shoot Julia first,  but David jumps in front of her, getting critically wounded himself. Julia keeps vigil over him in the hospital.

After The Final Duel

Diva's death brings an end to the mission of Red Shield.