Archie MacTavish

Archie MacTavish was a P.R.o.B.e. agent.

Archie joined PROBE in Giles' second year (WC: Manchester) and they would work together closely for eight years.(AUDIO]]: What Happened in Manchester)

In 2011 Archie and Giles were sent to The Vault to investigate the coverup of some deaths. They found out that Cyberon was behind the deaths, and watched Giles manage to negotiate the Cyberon into retreating after it struggled to convert the DNA of a young girl, Abigail, and instead caused itself to become infected with lycanthropy. (PROSE: A Worthy Successor)

Archie and Giles tackled Banshees, Valsheeth and Cyberons. (WC: Manchester)

Dr Haggard sent Archie to Helsinki in search of a vampire nest. When he returned Archie and Giles fought Shed Scales. (PROSE: The Door We Forgot)

On 23 April 2018 Archie and Giles investigated at Poltergeist at Garry Nelson's house. (WC: Peckham Poltergeist)

Archie died in Manchester during a mission headed by Giles involving a dimensional tear that had formed in the city. While they interrupted the cult ritual, Archie was shot dead by one of the cultists and his corpse sucked into the tear. Giles spent a week in a grieving stupor aftwards. (WC: Manchester) (AUDIO]]: What Happened in Manchester)

The Algea exploited Giles's feelings of guilt over his death. (PROSE: The Door We Forgot)

Unknown to PROBE, Archie MacTavish had not been completely dead when he was sucked into the portal and his functions were preserved in the space between dimensions. After drifting, he made contact with the Spiral Yssgaroth, the "reservoir of evil". Corrupted, he made a deal with the Yssgaroth entity, which helped him return to his universe to work on a ritual in time for the next Perihelion that would open a full gateway between the two universes. Returned to Earth as a vampire, he spent a year arranging attacks on PROBE as the only potential obstacle to his plans.

On the night of the ritual in 2021, Archie unleashed an army of corrupted creatures on London and revealed himself to Giles. The two former friends fought. Ultimately, PROBE successfully interrupted Archie's ritual. Archie was captured to stand trial and locked away in a high-security facility in Belmarsh. (PROSE: Preternatural Nights)