Zack couldn't believe this was happening.  Just a few months ago he was just a normal teenage boy, then one day he snuck into Fenton Works, hoping to find some cool ghost hunting gear and ended up getting blasted by an ecto-plasmic weapon.  When he woke up, his blonde hair had turned black, and his green eyes turned light blue.  Next thing he knew, he was phasing through the floor when his idol, Danny Fenton, found him.  He turned into his hero alter-ego, Danny Phantom, and pulled him out of the ground.

Turns out, Zack had become a half-ghost like Danny.  Over the course of the last couple months, Danny had been training Zack to use his newfound ghost powers, and making him the first member of a new team he was putting together called the Phantom Force.  Apparently, he wasn't the only one to have an accident that turned him into a half-ghost, and now he was standing in front of a small group of them beside Danny, introducing himself as leader of the Phantom Force.

Taking a deep breath, he cleared his throat and said "Welcome everyone.  My name is Zack Richards and like you, I am a half-ghost."  To emphasize this point, he transformed into his ghost form.  "You have been chosen to be apart of a team that will be working alongside Team Phantom in taking down the increased ghost threat.  The Phantom Force!"