This is Bonus Cat, who has a great story. In the words of the owner, ignignokt: "Formerly homeless Boston Garbage Cat. Now cleaned up, not eating garbage."

Re: the matching MacBook: "Banged up polycarbonate black MacBook I bought to stand in for my stolen MBP. It didn't have a working battery. (And the battery had swollen, pressuring the case and making the original owner think the trackpad wasn't working.) I tried to live without one, but recently broke down and bought one. So now it looks like Bonus Cat!"

Yay Bonus Cat!