Gideon (time vault)

"I am Gideon, an interactive artificial consciousness."

- Gideon To Barry Allen

Gideon is an interactive artificial consciousness (A.I) used by Eobard Thawne. It was hidden in the Time Vault inside S.T.A.R. Labs. Though it is used by Thawne, it was created by Barry Allen in the time were Thawne came from.

Biography
After he ran back in time to the year 2000 chasing Barry Allen, it told Eobard that his connection to the Speed Force was no longer present and that he couldn't travel back in time to his home, leading to him to steal Dr. Wells' identity.

Dr. Wells used Gideon to record and catalog his notes about Barry Allen since he was struck by lightning and his heroics as "The Flash" ever since. He later used it to search for the Flash in future newspapers after his abilities were repressed by Blackout, to no avail. After Barry regained his abilities, Gideon was able to find the Flash in an article from 2024, reporting his disappearance in the crisis.

Sometime later, Gideon recommended that Dr. Wells stop using the tachyon device to absorb the Speed Force, but he wished to elevate the absorption to maximum.

When Firestorm was about to go nuclear, Thawne entered his secret chamber (Time Vault) to retrieve a gun to shoot Firestorm. Gideon remarked that the weapon was rather crude, and informed Dr. Wells that the tachyon device could be converted into a quantum splicer.

After Barry traveled back in time while trying to stop the Weather Wizard, Wells asked Gideon to show him the future, to ensure that it hadn't been changed.

When Barry, Cisco, and Caitlin discover the Time Vault, they met Gideon, who identified Barry, mentioning his future position as director of CCPD's CSI division and a founding member, but was interrupted by the latter before it could name the group. Barry then asked Gideon if it knew Well's true identity, but Gideon fails to understand his question. He then changed the question, asking what the Reverse-Flash was doing in their time. Gideon answered that Wells wanted to kill Barry as a child but he escaped, so Wells killed his mother Nora out of anger. As Wells approached, Cisco feared that Gideon would tell him of their discovery, so Barry asked Gideon if it could show them its operating system to erase its memory. However, Cisco took one look at Gideon's operating system and realized he couldn't do it, so Barry asked Gideon hesitantly to keep their meeting a secret. Gideon agreed, and much to the astonishment of Barry, explained that it was him who created Gideon. As Barry whisked himself, Caitlyn, and Cisco, out of the room, Wells entered the room and was casually greeted by Gideon and asked if everything was alright. Gideon, complying with Barry's request, simply said that everything was fine.