I am reading it right now and thought what would be the outcome of doing the same!
Bea being Donut's rival… sounds interesting. Depending how you interpret it, it's not entirely wrong?
Carl being enemy of Mordecai looks really wrong though.
As for Carl being an enemy of the System (I assume the AI), that's also debatable.
And if the friend of a friend rule applied here, I think Carl would be a friend of Ellie too, since Carl is a friend of Katia, and Ellie is a friend of Katia too. And they are all allies. Weird.