That's from the Los Angeles BB Murder Cases book, A only gets a small mention, but back when I was really into Death Note, I met a person that really transformed A for me, so if I ever try to role play A, I do just like her, but I mainly like Rping as L, B, or Misa though.
That would be L and B for me. B had an even stranger sense of humor than L did, even though L was first and Watari at the time he first started up the orphanage tried to make A, B, and the others of the first generation into exact L copies. A was under so much pressure to be like L, he killed himself. And like Mello, to prove himself better than L, B became a criminal. But, yes, I was so sad when Light finally managed to off L. Damn Kira killed B too.
Yeah, it's not a manga, but it's still fun, the reason I jumped from manga to that is because Mello from Death Note makes mention of it in the Los Angeles BB Murder Cases spinoff novel. The main character of The Catcher in the Rye is a strange customer and a liar, so you never know whether to believe him or not.