Max is a young tomcat with deep blue eyes and a multicolor pelt with a number of ticks, which often cause the young cat to scratch his pelt to get rid of them. He lives with an human physicist.
Appearance in Göttergleich[]
Francis meets Max when he is captured by the Brotherhood of Black, and Max acts as a lawyer for Francis, and informs the detective that he's going to persuade the jury of black cats that Francis is not going to publicly disclose what was happening. Max fails to convince Francis to cooperate, but Francis is saved by the time running-back event before the black cats can carry out the sentence on him.
Later Francis investigates into Max's home to search for clues about the Brotherhood of the Black and finds out that Max's human master is a physicist, an acquaintance of his own master Gustav. Francis thinks that it's because of his master's activity, the younger cat learned of the time-back running event.
Max is found killed in his home and it is soon revealed that the murderer was Bluebeard, who is then killed after clashing with Francis. However, these events are canceled by the time running-back event. Eventually, it's revealed that the Brotherhood created this new alternate time where they had included Bluebeard among their ranks, to eliminate the possibility that Francis could gain clues from Max.
Revelations[]
It's unclear if Max is actually a member of the Brotherhood of Black, that seems to include also normal not-black cats, and his efforts as a lawyer seems to be directed to make the upheaval for the feline population the less shocking and dangerous. However, it's never revealed whether Max was aware of the true nature of the Brotherhood, and it's also possible that he simply wanted to save the live of the cats indicted.
With the conclusion of the book, it's said that all the cats forget the whole adventure, it's likely that Max, whose death is a never-happened event, kept on his previous life with his human master.