Albert Bolden

"Black Cross" was a Templar agent, active in Shanghai during the early 20th century, when China was marked by a growing conflict between the Chinese Communist Party and the government of the Nationalists, culminating with the.

The individual known as Black Cross in 1927 wasn't in fact the only Templar who had been called Black Cross, as it was the title bestowen upon the members of a branch within the Templar Order tasked with keeping the Grand Masters of the various Rites in line with the Templar Code. Deadly enforcers acting as an independent morality police force of one man, very few individuals had wear the title of Black Cross across the centuries.

The agent was known for his signature weapon, which was a bladed pin shaped as a black Templar cross.

Reference

 * Bleedingcool.com: NYCC ’15: Titan Announces Assassin’s Creed ‘Templars’ Comic Written By Fred Van Lente
 * Twitch.tv: Assassin's Creed Creedsmas (01:13:30)