DX-AX was a battle droid based on ADAS-A01

ADAS-A01 Assassin Droid Droid Old Republic Assassin Droid classes

design. It was stationed at the secret Imperial surveillance outpost deep inside Republic Research Division in Tiernon building on Nar Shaddaa

Nar Shaddaa Planet

close to the end of the the Cold War. It was part of DX annihilator network. DX-AX was contacted by Lord Zavrasha

Zavrasha (Sith) Character Minor Characters (TOR)

and related her message to a team of Imperial operatives

Imperial Operatives Organization Temporary Unions

during their campaign

Shattering the Peace Event Cold War (3653BBY - 3642BBY)

to prevent Republic technology advances on Nar Shaddaa.