Al MacKenzie

Real Name
Alphonso MacKenzie 

Occupation
S.H.I.E.L.D. Agent

Citizenship
U.S.A.

Place of Birth
Austin, Texas
 
Known Relatives
None
 
Group Affiliation
C.I.A., S.H.I.E.L.D.

Education
Unrevealed

Height
6' 2"

Weight
215 lbs.

Eyes
Blue

Hair
Grey

Powers
None

Abilities 
Al MacKenzie has been trained in hand-to-hand combat and in the use of various weapons, specifically high-tech explosives. In addition, he is a skilled strategist.

Other Info
Alphonso "Al" MacKenzie (or "Mac" to his friends) was born in Austin, Texas. Not much is known about MacKenzie's life before he began working for the C.I.A. as a liaison to S.H.I.E.L.D. While serving in this capacity, Mac came to know most of the elite members of S.H.I.E.L.D., including Jimmy Woo and Jasper Sitwell. Al never was too comfortable with the almost alien technology on display at S.H.I.E.L.D.; therefore, Mac didn't mind too much when he was terminated from his liaison position by Jimmy Woo. However, MacKenzie soon found out that in actuality, it was a rogue "Deltan" class LMD (Life Model Decoy) posing as Woo who terminated him. Upon learning that many other rogue LMDs were breaking into S.H.I.E.L.D. installations as well, Mac was able to find an agent who had still not converted to the rogue LMD's plans. Unfortunately, both MacKenzie and the other agent were captured. Luckily, Nick Fury and Alexander Pierce rescued them. Afterward, MacKenzie joined Fury on a trail that lead them to the heart of the rouge "Deltan" LMD affair. The result, however, was the end to the first incarnation of S.H.I.E.L.D. (To learn about the above highlighted team and/or characters, click on their names above.)

Soon after, MacKenzie returned to the C.I.A. and found himself paired with former S.H.I.E.L.D. agent Contessa Valentina Allegra di Fontaine. Soon, the two became romantically involved with one another. (To learn about Contessa, click on the highlighted name above.)

Later, while investigating a new offshoot of HYDRA, known as the Death's Head Squad, Al and Contessa brought Nick Fury into the investigation which led to uncovering an alien threat that they neutralized. Convinced that there was still a need for S.H.I.E.L.D., Fury decided to start up the organization again. Among the first agents recruited to the new S.H.I.E.L.D. were Mac and Contessa; however, their romance grew awkward under Fury's command (due to Contessa being Fury's ex-lover). Soon, tensions between MacKenzie and Fury created conflicts. Therefore, due to this, Al and Contessa left S.H.I.E.L.D. and joined back up with the C.I.A. (To learn about the groups above, just click on their names.)

At one point, under unknown circumstances, MacKenzie wrote a "tell-all" book entitled UnSHIELDed: an Unauthorized Insider's Look Behind the World's Most Powerful Global Spy Network. The book apparently explained some of the history behind the organization from his point of view.

More recently, Mac has acted as an unofficial source for the Daily Bugle, offering information to staff writer Ben Urich and Jessica Jones. He specifically wanted to expose Nick Fury's unauthorized mission to Latveria (later known as Nick Fury's "Secret War"). (Click on the highlighted names above to learn about the organization, characters, and/or place.)

There isn't anything there, but here is the Marvel.com bio link for Al Mackenzie, http://marvel.com/universe/MacKenzie,_Al. 

Alphonso "Mac" Mckenzie appears on Marvel's Agents of S.H.I.E.L.D. TV show. In this version, he is a mechanic who has allied himself with Director Coulson's team of S.H.I.E.L.D. agents.