The "Arrow" episode #14, titled "The Odyssey", directed by John Behring will air on CW February 13, 2013 :
"...after 'Oliver' (Stephen Amell) is shot, he turns to a surprising person for help -- 'Felicity' (Emily Bett Rickards). 'Diggle' (David Ramsey) is stunned when he sees Felicity walk through the front door of the lair dragging a dying Oliver behind her, and the two team up to save Oliver's life. As Oliver hovers between life and death, he flashes back to an event on the island -- a daring escape attempt with his new friend 'Slade Wilson' aka 'Deathstroke' (Manu Bennett)..."
Deathstroke will continue to appear in several 'back half' episodes of "Arrow" this year.
Deathstroke possesses various enhanced abilities including the strength of ten men and heightened speed, agility, stamina, and reflexes.
He has the capacity to use up to 90% of his brain at any one time, making him a tactical genius, adept at turning opponents' own abilities against them.
He also possesses a healing factor in his blood that enables him to quickly recover from physical injury, but could not heal his missing eye.
Deathstroke is skilled in the use of pistols, rifles, and swords, with his signature weapon, a power staff that fires lethal and non-lethal energy blasts from both ends. His body armor is composed of a mesh-woven, kevlar, chainlink mail, called 'Promethium', capable of stopping small arms fire.
Click the images to enlarge and Sneak Peek 'Deathstroke'...