He has two character traits. He is horny and an ass. He uses alien drugs to sexually assault people, and when Gwen is in danger from the sex gas, he stops to record it instead of helping his colleague. And that is just in the first two episodes.
Last choice: If you think the Doctor should warn Jiao to stay back
‘Keep back,’ says the Doctor, motioning Jiao away. ‘Further back. Well out of range.’ Jiao steps back, alarmed as he explains the multiplying nanites repurposing the professor’s body.
Before she can respond, the corpse stirs, releasing a black vapor that forms a hovering fog. ‘What is it?’ she asks. ‘More important we run,’ the Doctor replies, grabbing her hand. ‘So run!’
Terror Moon - Page 53
The Doctor and Jiao race through a door as the black cloud follows. The Doctor seals the door with his sonic screwdriver, but Jiao’s relief fades when he explains the nanites have evolved into an airborne organism.
Jiao reveals surviving scientists are in the outer base. The Doctor hesitates, fearing they might lead the cloud to them. Looking out the porthole, Jiao panics: ‘It’s trying to interface with the door controls!’
Terror Moon - Page 29
The Doctor and Jiao race through airlocks, sealing each behind them to slow the advancing nanite cloud.
With only minutes to live, they debate their options: flee to the shuttle bay or hide in the caves. The buzzing cloud closes in, and the Doctor, sonic in hand, ponders their next move.
If you think the Doctor should continue heading for the space shuttle