Veronica

Veronica is a Brotherhood of Steel scribe and a possible companion found at the 188 Trading Post

Companion

 * If the Courier talks negatively about the Brotherhood when first conversing with Veronica, she will refuse to join up as a companion, and further attempts to talk to will be unsuccessful.
 * If the player character has destroyed the Brotherhood bunker in Hidden Valley before recruiting Veronica, she will ask what they know about the Brotherhood when they meet at the 188 Trading Post. Telling her about destroying the Brotherhood will cause her to express shock and lead her to say, "Well in that case: This is for them" and attack.
 * Becoming Vilified with the Brotherhood of Steel causes Veronica to quit as a companion. However, it seems that even with a reputation as low as Merciful Thug, she will stay. She will remain a companion upon the destruction of the Hidden Valley Bunker, although she warns that it is the Courier's last chance. Destroying the Brotherhood of Steel by activating the bunker's self-destruction option will drop the reputation to Vilified, making Veronica leave the party even if she chose to leave the Brotherhood in her companion quest.
 * Veronica will enable access to Hidden Valley on much friendlier terms without being stripped of gear, having an Explosive collar put on, and having to get rid of Ranger Dobson from one of the bunkers.
 * Completing her companion quest in favor of the Followers of the Apocalypse causes Veronica not to enter the Brotherhood bunker anymore. As a companion, she will always wait outside the entrance.
 * Equipping NCR faction armor while Veronica is a companion leads her to issue her "last chance" warning.
 * Veronica will wear Brotherhood power armor, such as the one found on dead paladins at Black Mountain, REPCONN or near Nellis.
 * As with other companions, she offers a special perk: As long as she's in the party, the player character can talk to her and activate a workbench interface anywhere in the world, as she can help them craft with her own tools and expertise.
 * This advantage is nullified by the additional options provided by ED-E after playing through Lonesome Road and unlocking its workbench and reloading tools.
 * Unlike other companions, Veronica will not object to being sent to Lucky 38. However, as with other non-player characters, she will collect and consume any food and drink left in the suite, including in containers. The scripts tied to special Nuka-Colas and the like will apply visual effects to the player should she consume them.
 * Like ED-E, Veronica will not die, regardless of any difficulty, unless the Brotherhood of Steel quests have started.

Non-player character comments

 * Nightkin: "Book girl has hard decision to make."
 * NCR civilians: "Your lady friend seems out of place here."
 * NCR tourist: "Your friend seems too civilized for a place like this."
 * Boomers: "I can spot a Brotherhood spy from a thousand yards. Even the cute ones."
 * Brotherhood of Steel: "If you're planning to take Veronica with you, be sure to have a good pair of earplugs with you. I'm kidding, Veronica! Put the power fist down!"; "Keep an eye on Veronica here. She's a sharp one."; "Try to keep Veronica out of trouble, would you?"
 * Powder Gangers: "Now there's a fine-looking woman. Just needs to ditch the robe."
 * Great Khans: "Your friend's cute - is she single?"
 * Followers: "I didn't know the Brotherhood had any people out here."
 * Freesiders: "Your lady friend needs to lighten up."
 * The Kings: "Your girl's kinda cute, but not my type at all. I don't go for smart chicks."
 * Omertas: "Let me know if the pretty lady with you is looking for some work."
 * Outer Vegas inhabitants: "Your friend's not from the desert, is she?"

Dead Money
After completion of Dead Money, the Courier can retrieve Elijah's holomessage from his console in the abandoned Brotherhood of Steel bunker and give it to Veronica, but only after exhausting all of Veronica's dialogue options regarding Father Elijah. In the same conversation, the Courier can choose to keep the holotape's knowledge instead, gaining the Elijah's Ramblings perk. Giving Veronica the message will give her the Elijah's Last Words perk.

Appearances
Veronica appears

Behind the scenes
Veronica was featured in the Meet the Companions Playstation Blog, written by Jason Bergman. The transcript appears below.

Bugs

 * After giving Veronica formal wear or White Glove Society attire, she may thank you and say she'll teach you an unarmed move, and the screen will fade out and in, but the perk won't be added. According to the GECK, the object that does the timing for the fade-out/in when she teaches the player the move is shared with the nine triggers used to start I Could Make You Care. The script for giving the move doesn't fully reset the object, so if any of the nine triggers have activated, she will no longer be able to give the perk.
 * At Hidden Valley, she may glitch and stay at the intercom and the door to the bunker will become locked. In the PC version, the following commands can be used to fix this glitch: then.
 * Sometimes she will randomly stop following the player after accessing her inventory. In the PC version, the following commands can be used to fix this glitch:, , , finally followed by.
 * When paying Dawes the caps to enter the NCR Correctional Facility, she will randomly attack Dawes when you get in, but the Powder Gangers will not be hostile.
 * After destroying the Brotherhood bunker, Veronica will say how it is your last chance. After this, she will continuously engage in conversation with you and you have to dismiss her to the Lucky 38. This will sometimes continue even if you revert to a previous save (prior to the destruction of the bunker)