Most droids capable of causing harm to organic creatures through their programming were outlawed after the Empire rose to power. Interrogation droids remained legal and were primarily used as a tool of the Empire. In fact, their mere existence was not a well-kept secret. Rumors of their horrifying techniques and wicked cruelty spread throughout the Empire, and those citizens who were arrested by the Imperial Security Bureau and survived the droids’ treatments can tell the tale of their sadistic actions.
T0-D interrogation droids can’t be played as droid heroes.
T0-D Interrogation Droid (CL 4)

Threats of the Galaxy, page 146.
Medium droid (1st-degree) nonheroic 9 / soldier 1 nonplayable
Initiative: +6; Senses: low-lightvision;Perception +14
Languages: Basic, Binary, 1 unassigned
Defenses: Ref 16 (flat-footed 15), Fort 14, Will 13
Hit Points: 29; Damage Threshold: 14
Immune: droid traits
Speed: 6 squares (wheeled)
Melee: 2 claws +9 each (1d4+1) or
Melee: stun baton +9 (2d6+1 stun)
Ranged: sonic stunner +9 (2d6 stun)
Fighting Space: 1 square
Base Attack: +7; Grapple: +8
Attack Options: Devastating Attack (pistols), Point Blank Shot
Abilities: Str 12, Dex 12, Con —, Int 14, Wis 15, Cha 18
Feats: Armor Proficiency (light), Point Blank Shot, Skill Focus (Persuasion), [[Skill‑Training (feat)|]] (Deception), Weapon Focus (pistols, simple weapons), Weapon Proficiency (pistols, simple weapons)
Skills: Deception +14, Perception +14, Persuasion +19, Treat Injury +14
Systems: wheeled locomotion, basic processor, 2 claw appendages, 2 tool mounts, improved sensor package, internal storage (20 kg), vocabulator
Possessions: sonic stunner, stun baton, durasteel shell (+4 armor(, medical kit
Availability: Military, Cost: 5,500