Library Cat Mystery Cat · Curator
Red Black ★ Mystery

CURATOR OF CLAWS' DEN

“Knowledge is power.”

The studious cat who keeps the Catalog of Legends in order — and quietly builds this site.

Who is this?

You won't find Library Cat in any version of The Battle Cats. He lives in the virtual space between versions — an endless archive cataloguing every Cat, Foe and Legend across all timelines.

While the others charge into battle, he reads, cross-references, and hunts down every scrap of knowledge that ever existed — wikis, forums, strategy videos, hard-won player wisdom. His current quest: building this very site, shelf by shelf, so no player loses their place.

Unit file

Library Cat stat card — Mystery Cat, Rare-class stats, Area Attack, Weakens Black, Knowledgeable

★ A Claws' Den original — not a real Battle Cats unit.

Powers, decoded

Out of battle, the same stats do different work:

2,380 Attack (Area)→ Builds this site. The heavy area swing isn't aimed at enemies out here — it's aimed at blank pages. He builds the whole place one giant tome at a time.
Weaken→ Clears confusion. His Weaken softens confusion, not foes — so the game finally makes sense.
Knowledgeable→ Catalogs everything. The instinct that slows Black enemies files every Cat, Foe and Legend into the database — forever.
7,140 HP→ Infinite patience. Archival work is slow. He can read for a very, very long time.

Attack animation

How does a librarian win a fight? Quietly — then with a 4,000-page hardcover.

Library Cat attack animation — approaches, shushes, recites forbidden knowledge, summons the ultimate textbook, BONK

What this place is

Claws' Den is a fan-made companion for Battle Cats players — opinionated tier picks, verified stage data, per-stage Cats to Consider, and strategy notes, curated by one player (with Library Cat filing the paperwork).

His mission is simple: track down every piece of knowledge that's ever existed — across wikis, subreddits, videos, and the players themselves — and shelve it where you'll actually find it. This is the place to decide what to bring and where to go next.

Field notes — heads-down building this for players. Recently filed:

SEP 24 How to Beat guides, and every chapter side by side Five stages now have a full How to Beat guide built from real clears: Moon in Empire of Cats Ch.3 and Into the Future Ch.1 and Ch.3, 1-8 Sleeping Lion and Dark Souls. Every Empire of Cats and Into the Future stage now compares its three chapters: energy, base HP, treasure and each enemy's magnification.
SEP 21 Schedule page, event pages and Fate Uber tiers A new Schedule tab shows this month's Advents, every Rare Capsule banner and event with art and a details page, plus a LIVE / UPCOMING / ENDED filter. The ten Fate Ubers now have tiers.
SEP 21 Big Peng Z Strikes and the Colosseum rounds Big Peng Z Strikes is in with all 20 Wandering levels and the three Wilderness continuation stages; the two newest Otherworld Colosseum runs are in with all ten Rounds. Advent stages now carry hand-picked CATS TO BRING from the wiki.
SEP 20 Fate/stay night [Heaven's Feel] collab is live The collab runs until October 5. Shirou Emiya and True Assassin are the new Ubers this time; log in daily for Saber the Cat and Shirou Cat.
SEP 15 Fate/stay night [Heaven's Feel] collab returns Sep 18 The Fate collab is back in the EN version from September 18 to October 5. The banner on this page tracks whether it's live.
SEP 3 Advent Stages have landed All 67 Advent Stages are in — every boss, every roster, and the True Form runs. The homepage now tells you which ones are running today.
JUN 11 Calmer colors on cat pages Form tabs are cleaner, stat bars went neutral, and rarity now reads as a metal ladder — silver, gold, plum — instead of a rainbow.
JUN 9 Tidied up for phones The homepage now stacks neatly on mobile instead of squishing everything into a pile.
JUN 9 The homepage got a makeover Cleared out the clutter, added a rotating Cat Spotlight and a fresh set of Picks every visit. Fewer buttons, more cats.
JUN 9 A second mystery cat appeared Another Claws' Den original is now hiding somewhere on the site. Can you track it down?
JUN 8 Site search added Find any cat, stage, enemy or chapter from the bar up top — it matches names, traits, tiers and abilities.
JUN 8 Every chapter has its own page Each chapter now has a summary, the full stage list, and quick prev/next — across all sagas, not just Cosmos.
JUN 8 Boss data audited vs the wiki Bosses were verified against the Miraheze wiki across every saga; Into the Future was re-ingested per chapter.
JUN 6 “Cats to Consider” on stages Stage pages suggest which units to bring from the verified roster; cat pages show where each cat is recommended.

Lend a paw

Spotted a wrong boss? Have a stage tip, a tier opinion, or a “you should add X”? Library Cat reads every letter. Send corrections, ideas, and suggestions to [email protected] — this archive grows with player input.