Brother Shaft

Shaft (シャフト), better known as Brother Shaft (ブラザーシャフト), is the main antagonist and penultimate boss of Dawn of Sorrow.

Shaft was a former priest who became a dark wizard and a loyal ally to Onyx, later joining the Church of Blood Brothers. In order to bring his master to Terraria, Shaft sent the world into darkness by shattering the Miracle Star to deter Travis Asher from stopping him, and eventually was able to use his power to free Onyx from the Dark World.

Although he and Onyx were ultimately defeated by Travis, Shaft sent the hero 1000 years into the future with his dying breath. Several centuries later, a shadow incarnation of Shaft was used by Ruben's curse as an opponent faced by Brendan Wisteria.

Dawn of Sorrow
Shaft was a priest who wanted to dispose of the king of Terraria, however his plans were exposed and he was seemingly executed. However, he survived with half of his face deformed. Seeking revenge, he learned dark magic and sought to bring back Onyx from the Dark World, joining a cult and killing the leader, eventually returning to Terraria now as "Brother Shaft."

After some research, he discovers the existence of the Miracle Star and successfully locates it before shattering the Miracle Star, plunging the world into darkness, and harnessing some of its power. After Travis and Lana save Princess Thea from Shaft, he sends the Church of Blood Brothers after them. Brother Vigon fails and is killed, leading Shaft to appear before Travis and his party, and sends them into the Dark World, recapturing Thea.

When Travis and Lana suddenly return to Terraria, Shaft vanishes. Lana tracks him down, and the two duel the dark priest again, this time injuring him by deflecting his attacks, but he uses his magic to remove the seal to the Dark World and releasing Onyx. Travis, Lana, and Thea are able to defeat him and send him back, however, while dying, Shaft sends Travis 1000 years into the future.

Season of Ages
Shaft's legacy extends beyond his death, as he was used by Ruben's curse to create Shadow Shaft, one of the many shadow forms created by the curse to take over the kingdom and battle Brendan Wisteria.