The Mandalorian Basilisk War Droid was an powerful battle droid unit created by the Mandalorian Empire during the Great Mandalorian War. It was very powerful and had the agility of a tiger with multiple chain turrets all over its body, with most on its forehead, and could be ridden/controlled by an Mandalorian pilot, who could also blast enemy forces, as the droid didn't need constant control.
After the end of the Mandalorian Wars, most of the War Droids were shut down by the Old Republic and placed in storage houses, but some droids escaped deactivation and instead went rogue. One such droid became a part of the Black Sun criminal empire and became under ownership of mandalorian Chop'aa Notimo before it was destroyed by Darth Vader's secret apprentice, Starkiller. After this battle, War Droids were unheard of in non-mandalorian territory but would still be around during New Republic era. At least one War Droid was used by the Restored Empire against the New Republic.