This is a list of fictional characters in the television series Warehouse 13. The article deals with the series' main and recurring characters.

Main characters

Pete Lattimer

Myka Bering

Artie Nielsen

Leena

Daniel Dickinson

Daniel Dickinson (Simon Reynolds) was the Deputy Director at Secret Service Headquarters in Washington, D.C. Before Pete and Myka's reassignment to Warehouse 13, he was their boss. He is not happy about losing two of his best agents to some bizarre warehouse in South Dakota, unaware of its importance. He is initially determined to get them back, especially after facts about Artie's past come to light. Eventually, he sees his former agents are committed to their new positions, and they part ways. In the Season 2 episode "Vendetta," he is murdered for his knowledge about Artie's past.

Claudia Donovan

Steven Jinks Steven Jinks (Aaron Ashmore) is a former U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) agent who Irene Frederic recruited after having been told by Artie the nature of Warehouse 13. Jinks was intended to be Agent Bering's replacement, but after returning to the Warehouse, Agent Bering and Agent Lattimer resumed working as a team out in the field. At the same time, he does any fieldwork with Claudia Donovan if multiple artifacts need to be retrieved at one time. Agent Jinks also has the perfect ability to tell when someone is lying; even if the person lying is a master of deception, he would still be able to tell. However, certain artifacts, such as Richard Nixon's shoes, could nullify the ability. This power has other limitations: Steve seems to be unable to sense general deception, only baldfaced lies; in some ways, this makes his power more limited and easier to bypass than Pete Lattimer's vibes or Leena's aura-reading ability. Someone aware of this limitation can use it against him, as Sally Stukowski did. Steve's power seems to need some concentration to work; it is active rather than passive.

As revealed in "The New Guy," Steve is a Buddhist. The centeredness this gives him makes it possible for him to work the Feng Shui Spiral as Leena did; it is unknown whether any other current Warehouse employee can also successfully do this. In "Trials," Steve revealed to Claudia that he is gay after Claudia thought he was hitting on her. In "Love Sick," Steve told Pete and Myka that he is gay. While Pete & Myka were in a state of drunkenness brought about by contact with W.C. Fields' juggling balls, they inadvertently lured Steve into the bronzing chamber and temporarily bronzed him. After recovering from their drunkenness, they retraced their movements in the Warehouse and ultimately debronzed Steve. In "Queen For A Day," it was revealed that Steve had an older sister named Olivia Jinks. Steve's older sister Olivia, who frequently got him out of trouble when he was a kid, was killed at twenty by a stray bullet. Her death is the reason Steve joined ATF, and Claudia reminds Steve of her.

In "The 40th Floor", Pete, Myka, and Steve were sent to apprehend Sally Stukowski. After successfully captured, Stukowski was interrogated first by Artie and then by Mrs. Frederic. During the interrogation, Mrs. Frederic employed a dark artifact to extract information. Steve protested the use of torture on Stukowski and attempted to dissuade Mrs. Frederic from using the artifact. When she refused, Steve drew his service pistol, and in the ensuing confrontation, Stukowski managed to escape from custody. As a result of his insubordination, Mrs. Frederic fired Agent Jinks. In "Insatiable," Steve is shown in a bar, where he attempts to purchase a drink but is refused due to his credit card being burned out. Marcus Diamond shows up and offers to pay off Steve's bar tab. He then proceeds to try to get Jinks to join A to Z Technologies. Steve eventually acquiesces. In "Emily Lake," it was revealed that Jinks was working undercover for the Warehouse all the time, his "firing" and "defection" being part of a plan conceived by Jane Lattimer and Mrs. Frederic, but he ended up dead at the airport due to an "undetected heart defect" in the end, presumably caused by the same lethal injection that was used to kill Sally Stukowski.

In "An Evil Within," Steve was brought back to life using Johann Maelzel's Metronome, with Claudia and Jane's help. He had no recollection of being dead and was unaware of his death until he notices the metronome. Angry and confused, he heads towards the patio where he sits and talks with Claudia about how he has trouble dealing with what just happened. Later on in the episode, it is decided that since the side-effects of the metronome are currently unknown, Steve is to be placed under constant supervision. He is last seen going to dinner with the rest of the agents. In "Personal Effects," he discovers the side effect of using the metronome is that injuries he sustains will impact Claudia rather than himself. In "There's Always a Downside," Steve reveals to Myka his potentially dangerous connection with Claudia and the metronome and how he hasn't yet told Claudia about it. Myka urges him to start looking for a solution that doesn't involve him taking himself off the metronome - advice he takes, suggesting to Artie at the end of the episode that he would like to take some time away from missions, processing information about the metronome. In "Fractures," Steve finally reveals to Claudia the connection that the metronome has given them after Claudia feels the pain of a stab wound that Steve received protecting Artie. Claudia doesn't seem surprised to receive the news but says that Steve should've told her. Claudia gets upset when Steve says that he wanted to disconnect himself from the metronome before telling her and says that now that she knows, they can work as a team to figure out what to do about the connection.

In "Second Chance," Steve and Claudia travel to Steve's hometown to visit his mother (Laura Innes) and see about getting him off the metronome. It is revealed that Steve and his mother have a complicated relationship, but the only way to get him off the metronome is to perform a complete act of love towards her. He ends up throwing the metronome against the fireplace, shattering it in a burst of light, and miraculously starts breathing on his own. In "Runaway," Steve's (presumably most recent) ex-boyfriend is revealed to be Liam Napier, a U.S. Marshal. The latter assists the team in covering up the involvement of an artifact in an Arkansas jailbreak. During Claudia's birthday party, he admits that he said a perfect goodbye to Liam. Claudia, Pete, and Myka eventually find out that he 'slept' with Liam and congratulate him happily. Jinks' status in the Warehouse computer is currently listed as "Un-Deceased." The QR code is shown in 'Personal Effects' reads verbatim: "Steven Jinks (W13 Agent NXN43772632-30032). Murdered by Walter Sykes. Revived."

Recurring warehouse personnel

Warehouse agents

Helena G. Wells

James MacPherson James MacPherson (Roger Rees) is a former Warehouse Agent who was Artie Nielsen's partner. According to his backstory, he and Artie had a falling out, fifteen years previously, when MacPherson used the "Phoenix" artifact to rescue his wife, Carol Augustine (Lynne Cormack), from a fire that killed five firefighters (whenever the Phoenix is used to save a life, at least one other person must die). MacPherson went to prison, but he escaped two years later and disappeared. He returns in Season 1 as Artie's nemesis. He is acquiring and selling Warehouse artifacts to release them back into the world. He demonstrates a great wealth of knowledge of paranormal artifacts which he uses to accomplish his goals. Though numerous attempts have been made to capture him over the years, he remains large until the Season 2 premiere, "Time Will Tell," when he is killed in the Warehouse. In the following episode, his ghost seems to haunt the Warehouse but is seen only by Artie. His ghost's last act is to lead Artie to his room at Leena's—duplicated and stored in the Warehouse like all former agents—to show him a pocket watch that the two of them had argued over; the watch is accompanied by a note willing it to Artie. In the Season 4 premiere, we learn, "A New Hope" that the watch is the key to the location of a device having the power to reverse the destruction wrought by Walter Sykes in the Season 3 finale.

In the Season 3 episode, "The Greatest Gift," Pete accidentally uses a Christmas artifact to create a parallel timeline where MacPherson is in charge of the Warehouse, Artie has been banished from the Warehouse and imprisoned, and Myka and Claudia were never recruited into the Warehouse. As the only one who remembered the original universe, Pete gathered his team together to fight MacPherson. MacPherson killed Artie in the same way he died in the original universe, moments before Pete erased the alternate universe and restored the original timeline.

Hugo Miller Hugo Miller (René Auberjonois) was a computer genius and Warehouse agent in the late 1970s. In his quest to create a virtual artificial intelligence (AI), he attempted to use an artifact to copy his mind into the Warehouse software, which failed. He did succeed in transferring (not copying) half his mind, causing him to be committed to a mental hospital. In Season 2, when the dormant AI emerged and took control of the Warehouse, Artie and the team used the artifact to reverse the process and restore Hugo's mind. He reappears in the Season 3 episode "Love Sick" to help Artie when an artifact-enhanced computer virus begins to infect people, leading to the cellular degeneration of their bodies and eventually death. In the same episode, he had a relationship with Vanessa Calder when they were both active Warehouse Agents.

Rebecca St. Clair Rebecca St. Clair (1929–2010) (Roberta Maxwell), was a former Warehouse Agent under an unknown last name (although she is called Agent St. Clair in the episode "3... 2... 1"). Her years of service are unknown, though it is established she was already an agent in 1961. She left Warehouse 13 after the disappearance of her partner and lover, Jack Secord. She changed her last name and moved to St. Louis, Missouri, in 1965, where she worked as an elementary school teacher until retirement. She twice assists Agents Lattimer and Bering in solving various cases (episodes "Burnout" and "Where and When"). Stricken with terminal cancer, she dies while going back in time to 1961, using H.G. Wells' Time Machine to spend her final moments with Jack. The young Rebecca (Alex Paxton-Beesley) appears in flashbacks in the episodes "Where and When" and "3... 2... 1".

Jack Secord Jack Secord (Chad Connell), was a former U.S. Marine and Secret Service Agent; it was said that he received "vibes" similar to later Warehouse Agent Pete Lattimer. He was recruited by the Warehouse in 1955 and went missing in 1962. In the episode "Burnout," his body is found sealed up in an abandoned cellar, an act of self-sacrifice to entomb a dangerous artifact that had attached itself to his body. He was romantically involved with his partner Rebecca (St. Clair). Jack's character is seen in flashback in the episodes "Where and When" and "3...2...1."

Warehouse Caretakers

Mrs. Irene Frederic