Origin

Vox is appointed leader of Action Pack, the Initiative team of Kentucky. Vox sets up their portal to the Negative Zone prison from their home base when Justice uses their portal to perform a state to state jump. Vox and his teammates, Frog-Man and Prima Donna are jolted by a telekinetic blast from an irate Justice as he races to the home of Michael Van Patrick to get some answers.

Creation

Vox was created by Dan Slott and Stefano Caselli in 2007 and first appeared in Avengers: The Initiative # 7. 

Story Arcs

Secret Invasion

During the Secret Invasion, Skrulls were placing sleeper agents on every Initiative team to gather intel and infiltrate the Initiative from the inside. Dum Dum Dugan was a Skrull agent that was running Camp Hammond when he learned that the Skrull Kill Krew and 3-D Man were traveling state to state to eliminate the Skrull sleeper agents. Dugan ordered a broadcast to all Initiative bases and told all his sleeper agents to reveal themselves so they can reap the rewards for the Skrull Empire. Frog-Man revealed himself as the sleeper agent on Action Pack. 

Fear Itself

Commander Steve Rogers informs Prodigy of the unknown meteors that have fallen from the heavens and mass panic is on the horizon. Rogers asks Prodigy to gather heroes on a volunteer basis to help keep the peace and lead a new Initiative where there is no forced conscription or registration. Prodigy agrees to become the leader of the new Initiative and most of the former Initiative members including Vox gather in Washington DC.