Mewgenics NPC Upgrades: Who Should Get Your Cats?
For early progress, prioritize the upgrade that fixes your current bottleneck: Butch for equipment storage, Tink for breeding information, and Frank for more rooms. Those are different jobs, so a single fixed order is less useful than matching an eligible, expendable cat to the improvement you need now.
Who Accepts Which Cats?
Check the cat’s displayed status before sending it away through the house’s pipe. A cat can meet several NPCs’ requirements; you choose which upgrade its donation advances.
| NPC | Accepted cats | What the progression provides |
|---|---|---|
| Butch | Retired cats whose adventure progress meets his current request | More equipment storage; he also handles class-collar unlock dialogue |
| Frank | Retired cats | Additional house rooms |
| Tink | Kittens, with displayed age 1; normally born that day | More information about base stats, ancestry and breeding-related traits |
| Tracy | Cats with displayed age 5 or above | Purchasable food-storage upgrades, Blank Collars and idols |
| Baby Jack | Cats with injuries | Expanded furniture stock and later improvements to rare-furniture availability |
| Dr. Beanies | Cats with mutations, birth defects, disorders or parasites | Invention side quests |
| Organ Grinder / Mystery Man | Dead cats | Recovery options after failed adventures |
Steven is different: his progression concerns story conditions and difficulty options, rather than a cat-donation upgrade track. GameSpot’s upgrade overview distinguishes him from the donation NPCs.
Butch’s equipment storage and Tracy’s food capacity solve different problems. If food is hitting its cap, enlarging your equipment box is not the relevant upgrade.
Which NPC Should You Level First?
Use this as a decision order, rather than a requirement to finish one NPC before helping another:
- Send surplus kittens to Tink while they qualify. More visible information helps you choose parents deliberately. Keep a kitten if it has a skill or trait you want to preserve; an information upgrade is not a reason to surrender your only promising heir.
- Prioritize Butch when good equipment has nowhere to go. Check his current chapter requirement before allocating veterans. A cat that satisfies a difficult request may be more useful here than as a general donation.
- Prioritize Frank when your room plan needs space. More rooms let you separate groups and furniture arrangements. Also plan how you will furnish that space; an empty extra room does not supply Stimulation or Comfort by itself.
- Advance Tracy for the shop upgrade you need. Food capacity helps when the current cap is restrictive. Blank Collars add duplicate class options at departure, useful when you want more than one cat of a class; the extra collar is not a guarantee of your chosen class every day. Blank Collar mechanics.
- Use expendable injured cats for Baby Jack when furniture is the bottleneck. Budget for buying his stock as well as unlocking it. Keep a useful injured parent if its inheritance value outweighs the immediate shop improvement.
- Choose Beanies when you want invention challenges. Read the quest item and destination before adding it to a run; a quest unlock is a new objective, not an automatic completed reward. Beanies’ quest mechanics.
This prioritization is an editorial planning tool. It does not claim a tested fastest route or a universal best NPC.
If your goal is a secret route, check Hidden Areas for its prerequisites before allocating cats or taking a quest.
Keep the Cat or Donate It?
Before donating a living cat, check three things:
- Inheritance: does it carry a useful active, passive, base-stat combination or mutation you still need? Compare it with your other available parents in Breeding.
- House defense: do you still need capable retired cats for an approaching house boss? The game’s Tink dialogue explicitly tells the player to use retired cats to defend the house. Retirement alone is not a reason to discard the whole veteran roster.
- Replacement: which other cat could supply the same donation without losing something scarce?
A low-stat cat with a rare useful passive can have more long-term value than a higher-stat duplicate. Judge the trait you are trying to preserve, not just the total stat number.
Three Donation Decisions
Alley veteran, but Butch currently asks for Sewers or Junkyard: check the request against this cat’s actual progress. That cat does not meet the stated deeper-chapter requirement; Frank is a possible destination if you do not need it as a parent or defender. Butch’s game dialogue describes this change in his request.
Injured veteran that qualifies for Butch, Frank and Baby Jack: decide which missing upgrade is hurting the next run. Storage pressure favors Butch; a needed room favors Frank; limited furniture stock favors Jack. Eligibility alone does not choose the best use of that individual cat.
Newborn with a desired inherited skill: keep it for your breeding or adventure plan. Send another surplus kitten to Tink rather than sacrificing the target just because both are eligible.
Why Won’t the NPC Accept My Cat?
| Problem | First check |
|---|---|
| Tink rejects yesterday’s kitten | Is its displayed age still 1? The ordinary kitten window passes when it grows up |
| Butch rejects a retired cat | Does that cat meet his current chapter request, rather than an earlier tier’s request? |
| Frank rejects an adult | Check for the Retired status; simply being older does not demonstrate adventure retirement |
| Tracy rejects a grown cat | Read the displayed age: her requirement is 5 or above |
| Baby Jack rejects a wounded-looking cat | Check for an actual injury, rather than assuming lost battle HP qualifies. Injury definitions |
| Beanies does not offer another invention | Check qualifying traits, his current dialogue and your active quest capacity before treating it as a donation failure |
| A shop unlock seems to do nothing | Visit the shop and inspect what is now available to purchase; Tracy’s unlocks are stocked wares, not automatically owned upgrades |
If an NPC is not available yet, check story progress and map dialogue first. For the next donation count or chapter requirement, use the request shown in your game; do not assume every upgrade takes the same batch size.
Sources and Review Scope
Reviewed on October 9, 2026. Eligibility and reward roles were cross-checked against individual community-wiki NPC references and the GameSpot and Destructoid upgrade guides. The recommendations use those roles to solve different bottlenecks. Complete level-by-level costs and rarity percentages are omitted because this review did not independently verify them in the latest game build.
Continue with Getting Started, Furniture and Cattery or Classes for the next part of your plan.