"Sorry, I just can't believe this is finally happening. I've been waiting my whole life for this since I first phased."
- ―Zack
Zack Rivers is a member of the Black pack introduced in Full Of Surprises. He is the younger twin brother of Jayden Rivers that is most excited of his duties and a relative of the Black and the Atearas.
Biography
Early life
Zack Rivers was born and grew up in La Push with his family and is the younger twin brother of Jayden Rivers by ten minutes. He hears about the Quileute legends and unlike his brother, Zack believes them to be myths. However, Zack witnessed Jayden phase into a wolf for the first time causing Zack to phase from shock. Although, Zack was startled of his transformation, he was however excited to take on vampires and his duty as a shape shifter. Soon he along with his brother was recruited to join the Black pack.
Full Of Surprises
Zack made his appearance in his wolf form where he met up with the rest of the members of the Black pack and the Uley pack where Jacob Black informs them of Tiffany Stewart being the latest victim of Joham creating a "super race" of hybrids by getting human women pregnant. Knowing that he's harming humans for his own experiments, both packs assist on protecting Tiffany from Joham. Zack is shown to be very excited about this to take on a vampire.
Zack was seen outside the Cullen house along with Jayden, Tom Gardener, Maya Seagal and Kevin Cress standing guard while the rest of the pack minus Jacob assist some of the Cullens on catching Joham's kids Blake and Christina. However, the Cullens and the pack were ambushed by newborn vampires led by Joham but they destroyed the army and Joham failed to get Lucina Stewart although he vows to have her.
After Joham's second failed attempt to get Lucina, the Cullens filled the pack in on the plan. Zack was with Jayden, Kevin, Embry Call and Quil Ateara catching Blake who was supposed to be killed by the Cullens. They succeeded on capturing him and brought him over to the Cullens where they have Joham and Zack destroyed Blake before Joham was next. The Cullens were about to kill Joham until the Volturi arrived to see what was going on. Aro meets Tiffany and Lucina and eagerly asked them to join their coven which was refused by an angered Lucas. After Lucas rant out about the Volturi's failure of their job, the Volturi killed Joham and returned to Volterra. According to Edward, Lucas's words impacted them although it'll 'take time for them to admit it,' he said. Everyone soon threw Lucas in the air as a celebration for everything he has done for the coven.
Have A Purpose
To uncover the mystery about the Volturi's future and Jemma and Raymundo's idea with the Cullens, Zack along with Tom, Maya, Jayden and Kevin made an area for the Cullens to make a scene when encountering Jemma and Raymundo by using their scent to mask the Cullen's so that they can deceitfully uncover the two's involvement about the Volturi.
Physical appearance
Although Zack never made an appearance in his human form, he would have the traditional features of a Native American; black hair, russet skin and is six feet and two inches tall.
Wolf form
Zack's wolf form.
Zack’s wolf form is described as having light brownish.
Personality and traits
Zack is less serious than his brother Jayden as he is always overexcites himself on his duties. By joining the Black pack, Zack isn't prejudice of the Cullens like Seth Clearwater is of them thinking them as people than vampires.