When I say drone in this context I don't mean an unmanned aircraft.
Drones are unmanned aircraft which can receive flight path control (rather than controls directly affecting the control surfaces/rotors). Method of generating lift, engine technology and size are not a factor - after WW1 some biplanes became drones and various air forces have converting more modern end-of-life fighters to drones, either for attack or for target practice.
I'm not sure what the terminology of a drone that has been adapted to carry a person?
Passenger carrying unmanned aerial vehicle or 'passenger drone'
Is this picture below considered a helicopter or what?
What. I'd call it a rotorcraft (UK terminology used, e.g. in CAA larger UAS guide), or more specifically a large octocopter.
I tend not to call things helicopters if they don't have helicopter controls (cyclic and collective driving a swashplate), but I can't find an authority on whether that is what makes a helicopter. Electric multi-rotor craft use differential rotor speed to manoeuvre instead.
What if it ran on petroleum?
I suspect it would fall out of the sky - it would be hard to get the control responsiveness from eight small petrol engines or one large one and an eight way variable transmission that would allow it to be stable. You could change it from an octocopter to an eight rotor helicopter by adding swashplates, but with the other changes to make that happen it would be a different thing.