"Countdown to Doomsday!" Part 5 of 9. Guest-starring Deathstroke, Phantasm, and Pantha. Deathstroke, Dayton, and Raven's mother are joined by Nightwing, Phantasm, and Pantha just in time to face an army of Wildebeests. But nothing could have prepared them for the shocking true identity of the Wildebeest leader. Get ready for the startling revelation that will shake the Titans to their very core.