Alphonso “Mack” MacKenzie strives to use his CIA and S.H.I.E.L.D. experience to make a difference in the world.

Everything’s Big in Texas

Hailing from Austin, Texas and raised in simple, unadorned fashion, Alphonso MacKenzie grew up to embrace a down-to-earth philosophy in his personal and professional lives. With an interest in weaponry and an even bigger focus on explosives, he joined the United States’ Central Intelligence Agency and quickly became a top agent there and eventually the Agency’s direct liaison to S.H.I.E.L.D., America’s other massive intelligence organization.

While acting in this position, MacKenzie became known for his straightforward talk and actions, as well as his disdain for the advanced, often alien-derived technology and equipment S.H.I.E.L.D. utilized on a regular basis. Perhaps because of this, he developed something of a love-hate relationship with the organization over the ensuing years of his career.

Alphonso Mack Mackenzie

Let’s Get Physical

Known as “Mac” to his friends and teammates, MacKenzie handles himself admirably as a close-quarters fighter and excels in both use and knowledge of firearms and explosives. In addition, he has impressed his superiors and confederates with his understanding and implementation of strategy and tactics in the field.

Strained Relationships

Many of Alphonso MacKenzie’s personal relationships with others have deteriorated from fair working order to sometimes outright hostility. One of his only known romantic affairs, that with the Contessa Valentina Allegra di Fontaine, crumbled under his connection with Nick Fury, an old flame of the Contessa’s. Furthermore, MacKenzie’s drive to expose what he sees as Fury’s international crimes as the former director of S.H.I.E.L.D. has also transformed what once might have been called a friendship into a war of personalities.

Alphonso Mack Mackenzie




215 lbs.







Universe, Other Aliases, Place of Origin, Identity, Known Relatives, Powers, Group Affiliation
  • Universe

  • Other Aliases

  • Place of Origin

  • Identity

  • Known Relatives

  • Powers

  • Group Affiliation

The Rollercoaster

“Mack” MacKenzie’s trials and tribulations over the years have mostly sprung from his experiences as both a CIA operative and his on-again-off-again interest in S.H.I.E.L.D.

While the CIA-S.H.I.E.L.D. liaison, MacKenzie came into contact with a self-controlling Life Model Decoy known as the Deltite who posed as the then-director of S.H.I.E.L.D. and was stripped of the position by the robot. Upon further investigation, MacKenzie realized the Deltite’s scheme to replace the organization’s top agents and leaders and formed an alliance with Nick Fury to smash the entire set-up. This in turn led to the actual destruction of S.H.I.E.L.D. as an entity, leaving Fury without the intelligence operation he’d worked for many years to define and refine.

Once back squarely with the CIA, MacKenzie was linked romantically with the Contessa Valentina Allegra di Fontaine, a fact that sat poorly with Fury, himself once involved in a romantic relationship with the Contessa. Despite this, the couple asked Fury to join with them in breaking up an alien plot against Earth and smashing Baron von Strucker’s Death Head Squadron. With his objectives successfully accomplished, MacKenzie suggested Fury look into the development of a new incarnation of S.H.I.E.L.D., and later both he and the Contessa joined the revived organization.

Alphonso Mack Mackenzie

While with S.H.I.E.L.D., MacKenzie worked to help clear the Deltite’s influence from all remaining agents and employees. Meanwhile, his relationship with Fury further fell part due to the Contessa’s constant psychological game-playing with the men’s affections for her. Around this time, MacKenzie became embroiled in a situation between the cyborg Deathlok and the Roxxon Oil Corporation, which ended with S.H.I.E.L.D. seeing to the dismantling of Cybertek, the Roxxon subsidiary responsible for the Deathlok program.

Incredibly, MacKenzie somehow earned the trust of the vigilante known as the Punisher, and agreed to take custody of three young women called the Waterboys who’d bedeviled the Punisher on one of his more violent cases.

Sometime later, after his resignation from S.H.I.E.L.D. Alphonso MacKenzie decided to reveal many of Fury’s and S.H.I.E.L.D.’s secrets through the publication of an unauthorized book, UnSHIELDed. While many believed the book to be a biased point-of-view from a disgruntled ex-agent, MacKenzie himself saw it as way to highlight to the public what he saw as Fury’s unbridled abuse of power on foreign soil.