|For the Cybertek employee, see Diaz|
Agent Diaz is a S.H.I.E.L.D. operative who was recruited by Melinda May under Alphonso Mackenzie's leadership. She assisted in S.H.I.E.L.D.'s fight against Sarge and Izel then helped agents escape the Lighthouse when the Chronicom Hunters attacked the Lighthouse.
Agent of S.H.I.E.L.D.
When S.H.I.E.L.D. returned to the public again under Alphonso Mackenzie's leadership, he had Melinda May recruit people for the organization, which included Diaz, who became one of their tactical members, going on field missions as a part of STRIKE.
- "Bravo team?"
"Bravo team, in postion."
- ―Alphonso Mackenzie and Diaz
In 2019, S.H.I.E.L.D. was searching for reality distortions that had occurred a few times in different locations. Sometime after, they had four STRIKE teams in position when another started to emerge. Diaz, who piloted Bravo team, which included Yo-Yo Rodriguez, checked in with Alphonso Mackenzie and waited for a signal. However, when the occurrence began, they were not near it, so they returned to the Lighthouse.
Infestation in the Lighthouse
As they made their way through the base, Keller explained to Diaz what the creature was, much to her confusion. When they heard the Shrike, Diaz made a plan for them to split up so they could capture it. However, while searching for the Shrike away from the two, the bird flew at Keller, forcing itself inside him through his mouth. Diaz rushed back to them, as Rodriguez brought Keller to Marcus Benson, telling them she would call for medical evacuation. Unfortunately, Keller was not able to be saved when the Shrike took over his body.
When Melinda May successfully captured Sarge and Snowflake, they were arrested and taken to the Lighthouse. Diaz and Trevor Khan were talking in a hallway as they noticed May escorting Sarge. They both gave Sarge a foul look, due to him sharing the exact appearance of S.H.I.E.L.D.'s former Director, Phil Coulson.
When S.H.I.E.L.D. located two Shrike hosts, Diaz joined May and Yo-Yo Rodriguez on the Zephyr One to save them. Diaz stayed on the Zephyr after landing in Iowa, while May went to bring in the host. When May returned with the host, Diaz informed her that Rodriguez had successfully captured her designated host as well. They then headed back to the Lighthouse, being rejoined by Rodriguez's team, putting both Shrike hosts in the Containment Module.
However, Diaz noticed the hosts starting to shake, to her concern, so Rodriguez told her to close the door, and they watched as the hosts reacted off each other. They attempted to sedate the hosts, but spikes began to burst out of them, killing an agent. Diaz and Rodriguez then watched as the spikes started to break through the containment module. Rodriguez handed Diaz an axe and told her to stay behind her for protection.
When May was informed that cold could stop the Shrike, she warned the two to get to safety, but they were trapped there. They then grabbed masks from the oxygen tanks and held on to the Zephyr, as May opened the ramp to depressurize. As the spikes burst out of the containment module, Diaz and Rodriguez watched as they slowly began to freeze, with one of the spikes almost impaling Diaz, but Rodriguez grabbed it to save her. The spikes all became frozen and broke apart, flying out of the Zephyr, and they continued to return to the Lighthouse.
- "Agent Diaz, I want you to take the controls. Get there fast."
- ―Alphonso Mackenzie to Diaz
When S.H.I.E.L.D. worked with Sarge and his squad to stop the Shrike Tower, Diaz joined the team on the Zephyr One, led by Alphonso Mackenzie. When it was revealed Sarge intended to use an Atom Bomb in his truck to destroy the tower, Diaz contacted the local law enforcement, who told her they were on standby, but were unable to stop the truck.
When they planned to extract the ground team with a Quinjet, Mackenzie tasked Diaz with piloting it after Yo-Yo Rodriguez fuelled it up. However, they were ambushed by Sarge and his squad, who infiltrated the Zephyr, and Diaz was shot by Jaco. Sarge then took control of the Zephyr, ordering Davis to follow Izel ship. Diaz stayed on the ground, still hurt from her wound, with Mackenzie comforting her to hold on.
After Sarge spoke with Izel and became incredible angry, Mackenzie, who had been secretly freed by Rodriguez, began to taunt him, causing Sarge to threaten killing Diaz. However, this caused Sarge to become distracted, allowing Mackenzie to attack him, and eventually knock him out after a brutal fight, which Diaz was only able to sit and watch. After S.H.I.E.L.D. completed their mission, they all returned to the Lighthouse, where Diaz was taken to have her wound treated.
- "Diaz? Who did this?"
"I don't... I don't know, I was guarding May a second ago, and then... this."
- ―Daisy Johnson and Diaz
Sarge's body was soon taken away, and Alphonso Mackenzie arrived, so Diaz informed of the situation. Diaz was then tasked with watching over May, but Izel took the opportunity to move into Diaz's body. When Yo-Yo Rodriguez entered to talk to May, Izel, who was now in Diaz, left the room to continue her infiltration. Izel then made her way through the Lighthouse and snuck up on Piper, who shot at Diaz, but Izel left her body and possessed Piper.
With Izel no longer possessing her, Diaz awoke, experiencing a draining blackout, as well as being shot and hurt badly. Shortly after, Diaz was discovered by Daisy Johnson, who quickly went to check on her. Johnson asked who shot her, but Diaz did not know, having no memory of it. So, she recounted the last thing she remembered, which was guarding May and then waking up where Johnson found her.
- "Get everyone to the twenty-first floor. Avoid all emergency exits."
"Aren't you coming?"
"We're a liability."
- ―Jemma Simmons and Diaz
When the Lighthouse was ambushed by the Chronicoms, Diaz went to protect other agents who were with her. Diaz then came across Leo Fitz and Jemma Simmons, who told her to get all of the S.H.I.E.L.D. agents to Deke Shaw's lab, and she complied.
- Pilot: Diaz was trained to fly a Quinjet, and became one of S.H.I.E.L.D.'s main pilots, after Melinda May and Davis, flying agents on many missions, such as when they were investigating anomalies. This high qualification, was why Alphonso Mackenzie tasked her with flying a Quinjet at high speed to rescue some agents.
- Smith & Wesson M&P: As a S.H.I.E.L.D. agent, Diaz was equipped with this gun. She used it during the search for a Shrike in the Lighthouse and when the Chronicom Hunters attacked the Lighthouse.
- Quinjet: During S.H.I.E.L.D.'s investigation of anomalies, Diaz flew a Quinjet with Yo-Yo Rodriguez onboard.
In chronological order:
- Agents of S.H.I.E.L.D.