Voiced by: Wolfgang Hess (German), Bob Sessions (English), Benoit Allemane (French)
The Bully: He loves throwing his weight around, quite literally at times.
The Brute: A hulking bullying cat who has no problem harassing the neighborhood cats.
Even Evil Has Loved Ones: Not really "evil", but comes pretty close. The murder of Solitaire, one of his girlfriends, made Kong want to find who was responsible and rip out his limbs.
Gonk: He's nominally a Himalayan, but such a hulking, fangy brute has more in common with a smilodon then a domestic cat. Averted in the book where he is simply described as "abnormally huge" but is otherwise a normal cat.
Hidden Heart of Gold: Ultimately comes out with the horrifying death of Solitaire, his mate, causing him to do a HeelFace Turn, forget about menacing the protagonists and turn all his energy into finding the murderer.
Meaningful Name: He's the biggest cat and named after the biggest beast in fictional history.
What Happened to the Mouse?: You would think him having a personal vendetta against the killer would make give him a big role in the movie/book. But he almost completely disappears following The murder of Solitaire and his only further contribution the plot is helping Francis and Pascal get their voices heard during their "press conference".
Voiced by: Ulrich Wildgruber (German), William Roberts (English), Philippe Dumat (French)
Death Seeker: He lets Claudandus kill him to prevent their secrets from getting out.
Pet the Dog: Yeah, he's a total crackpot, but he did take in and raise Isaiah.
Voiced by: Helge Schneider (German), Ian Tyler (English), Jacques Ciron (French)
Sanity Slippage: A lifetime of guarding the dead has left him more than a bit unstable.
Voiced by:Klaus Maria Brandauer (German), Ricardo Hill (Mexican Spanish), Peter Marinker (English)
Affably Evil: Even after being exposed as the Big Bad, he still treats Francis like an equal and remains polite.
Apologetic Attacker: Apologizes to Francis quietly before going in for the kill when Francis tries to delete the logs of his murders. It's emphasized slightly more in the original dub, whereas in the original German Claudandus throws Francis' own apology back in his face before attacking.
"You can't begin to imagine how deeply I regret this, Francis..."
The Chessmaster: He's been working on his eugenics plan for decades and attempts to groom Francis to be his successor.
Fantastic Racism: His experiences have convinced him that all of humanity is irredeemably evil deep down.
From Nobody to Nightmare: He started out as an orphan cat who became Preterius' lab subject. After months of torture, he kills his master and sets out to remake the current cat population.
Handicapped Badass: Despite being an old cat dying of cancer, stated to be a few months ahead of the reaper, he does manage to ambush and seriously injure Bluebeard and fights like he's got nothing to lose against Francis.