The Mnemosyne know a lot, and are aware of much, and because of this they are the proud founders and primary members of the Vacotor Knowledge Symposium, a group of science-oriented species working to build the galactic database, the Vacotor Database. The Mnemosyne thus are closely allied with the Ciitarkians the Glairnogs and formerly, the Ahhc. However, these three races communicate(d) with the Mnemosyne through hyperwave communication as opposed to face-to-face conversational contact.
Unlike the Voiasenso, the Mnemosyne do not interact with younger races, as they feel uplifting younger races is actually harmful toward them, raising them to a level that said younger race is not ready for yet. They thus follow the Unseen Phalanges Movement of the Ancients very closely. Because of this, Mnemosyne traverse the universe wearing powerful cloaking devices, allowing them to gather information yet never be seen. As such, despite such a wide variety of sapient species utilizing the Vacotor Database, often on a regular basis, the number of them that have seen a Mnemosyne or know what they look like are infantesimal; the only currently known non-Ancient being to have seen a Mnemosyne in person is the Wygonakan admiral, Feroc Orico.