AI in a killer drone unleashed on civilians? The bad actor is the one who deployed this weapon.
AI given agency and goal maximization ending up gaining physical form all on its own and killing people? or hacking into bank accounts to enrich its creator?
The latter more likely than the former, but for cyber-offensive AI there is cyber-defensive AI.
Musk lately admitted that he's an AI accelerationist (following lots of the e/acc people and liking their posts) and despite his dystopian view of AI he's pushed it very hard at Tesla. He just wants the US to give him control of it (under the pretext that no one else can manage it safely.)