Spy Catcher
There's a Grineer spy in Cetus. Put pressure on the Grineer and force the spy out.
Lotus Dialogue: Dex Anniversary Rewards
Every year, in March, the Lotus grants the Tenno a new Dex gear item to commemorate the start of Open Beta in Warframe.
Teshin Dialogue
Teshin is the enigmatic leader of the Conclave Syndicate
Mutalist Alad V Dialogue
After his defeat at Themisto, Alad V fell off the radar and was presumed dead. However, in the Suspicious Shipments special alert, it was revealed that he had survived the Tenno's assassination attempt and was now working with Infested biotechnology
Octavia Prime
When ape pounded flint on flint, some watched the sparks.
Ordis Dialogue
Ordis is the cephalon in charge of the Tenno's Orbiter (including the Landing Craft).
Grandmother Dialogue
Grandmother is a member of the Entrati family, and seeks to help heal their relationships with each other, using the Tenno to do so.
Proxy Retribution Bonus Weekend
The Proxy Retribution Bonus Weekend was a series of Alerts in late May 2016.