Oxford alumnus and Naval Engineer. He was a member of the University rowing team that won the world famous regatta between Oxford and Cambridge for three consecutive years. He is a fantastic swimmer and was the first person to swim across the English Channel on a bet. In 1935 he enlisted in the Navy and was promoted to Captain in 1936 but later demoted to Sergeant two years later due to an 'incident' during a stopover in Hawaii. Further problems made the General Staff give him the option of being expelled from the Navy or entering the Commando Corps as an ordinary soldier, the latter of which he did.
Blackwood previously had problems with alcohol which are apparently under control. He continues to love gambling. His skills as a sailor make him invaluable in any mission that involves naval operations.
The Marine is a specialist trained for aquatic and amphibious assault based missions. With his harpoon gun and his diving equipment he is able to spend hours underwater without worrying about oxygen supply or about danger he may encounter at sea. He also carries a zodiak (inflatable boat) to row across waters, transporting his comrades in a mission. On land he has complete mastery of throwing knives and carries a grappling hook which he is able to use to climb buildings, walls and trees. When he collects a couple more knives, his lethality and efficiency increases dramatically.