Ricky September was a 25 year old singer who lived in Finetime. He was followed by all members on the online social network generated by the AI Dot, including Lindy Pepper-Bean.

He and Lindy made their way to the conduit, Ricky keeping it a secret that their homeworld had fallen prey to the mantraps too. Once down in the underground, he worked to break the access codes on the locked door but then had to fight off Lindy's Dot when it turned on and tried to kill her. However, during the struggle, Lindy revealed Ricky had changed his last name, taking advantage of her knowledge that mantraps had been consuming people in alphabetical order by surname. Devastated, Ricky could only stand and give Lindy a look of utter shock before the Dot killed him.

You are a companion of the Doctor, and you noticed how odd Lindy was acting about Ricky's whereabouts. So, while the spoilt rich kids were being racist towards the Doctor, you went back to find Ricky.

But when you do find him, he's on the floor, barely conscious. There was a mark on his forehead from the dot.