Nassana Dantius

Nassana Dantius is an asari diplomatic emissary assigned to the Citadel. She can be found seated in the Embassy Lounge on the Presidium and gives the assignment Asari Diplomacy.

Nassana will not talk to Shepard while the commander is in the lounge, but sends a brief message to the Normandy later, asking for a discreet meeting. She needs the help of a Spectre for a personal mission. Nassana's sister, Dahlia, has been taken prisoner by a band of mercenaries who are holding her to ransom. Nassana broke Citadel diplomatic regulations and paid the ransom, but Dahlia has not been returned. She has tracked her sister to Sharjila in the Artemis Tau cluster and she begs Shepard to bring her back.

Nassana Dantius is voiced by Grey DeLisle.

After raiding the mercenary base Shepard discovers that, far from being a captive, Dahlia Dantius was actually their leader and she was blackmailing her sister. After being confronted with this, Nassana abandons her facade and thanks Shepard for eliminating a potential embarrassment. (If Shepard finds Sharjila independently, Nassana is almost disappointed that she did not have the chance to manipulate the Commander, but it does not matter now.) If Shepard says Nassana could have just told the truth to begin with, she concedes the point, but states that "we have trust issues in my family". If Liara is in your party during this conversation, she will make a terse comment by saying "Obviously".

Nassana then offers payment. Even if Shepard refuses her blood money, Nassana will pay anyway, claiming she does not like being in debt to anyone and saying Shepard can give the money away if the Commander's conscience is bruised.

Shepard can also Charm or Intimidate her for a bigger payout. Nassana agrees that any fool can come up with credits, but she can put Shepard on the buyers list for prototype asari mods. This gives Shepard the Armali Council armory license.

Mass Effect 2
She returns in Mass Effect 2 on the planet Illium, an asari colony world. She confronts Shepard and accuses the commander of being an assassin. She can say the situation is ironic, as Shepard killed her sister and now is going to kill her, this only occurs if a Mass Effect save has being imported. Shepard tries to explain that she is mistaken, and the assassin is the reason for the visit. Nassana refuses to believe Shepard and asks why the commander broke in and decimated her security to just find the assassin. As she continues her accusations, Thane, who has surreptitiously infiltrated the office through the air ducts, murders the remaining guards, then kills Dantius at point blank range. Thane had come to kill Dantius due to her unscrupulous business habits, namely killing anyone that threatened her reputation. During Shepard's team's fight towards her office, she had the salarian workers in the uncompleted building slaughtered by her security forces, most likely due to paranoia and wanting the building secured against Thane.