Avina

Avina is the Citadel VI, first encountered by Commander Shepard near the Embassies on the Presidium. Like all VIs she appears as a hologram: Avina takes the form of an asari. She has several terminals around the Presidium, often near points of interest such as the Relay Monument or the Krogan Monument, and can answer any questions Shepard might have, giving guidance and a brief insight into galactic events.

However, if Shepard asks for Avina's opinion, or if the Commander's questions get too politically charged, Avina sadly says she hasn't been programmed with the parameters to answer, maybe picking up on the diplomatic nature of the asari. If Shepard tells Avina about being invited to the Council Chambers, she says that is a rare privilege; she would be jealous, but that is beyond the scope of her programming.

Avina is voiced by Dannah Feinglass.

After Saren Arterius launches his attack against the Citadel, Shepard's team returns to the Citadel via the Conduit and can access the Avina terminal near the elevator. Avina gives them a status report on the geth attack and lists the damage on the Presidium. At this point Avina's holographic generator seems to have been badly damaged, though she can still report what happened to the Council, as well as where Saren is headed.

Mass Effect 2
Avina is found on several terminals around the Zakera Ward. Avina will answer questions concerning the current state of the Citadel and the local points of interest found around the terminals. Avina notably states that the Citadel attacks were caused by the Geth rather than Sovereign. If Shepard asks about the Reapers, Avina states that she has no information regarding the term.

If Shepard questions some of C-Sec's security measures following the original Council's death, Avina will tell you that C-Sec officers are coming to detain you and advises you not to resist.