How many passive slots does Mammorest have free?
Mammorest keeps Heavyweight as fixed, leaving 3 of 4 slots for custom passives.
Can Mammorest Get Heavyweight in Palworld 1.0?
Checked against Palworld v1.0.3 · verified 2026-08-23 · Data status · Sources · Methodology
Currently obtainable
Yes. In Palworld v1.0.3, Mammorest can get Heavyweight through currently verified methods: it is a fixed passive. Heavyweight is a fixed passive on Mammorest in v1.0.3; every Mammorest has it. The facts behind this answer are graded B and come from 2 registered sources.
- Reason
- Defense +20%
- Rank
- 2
- Random pool
- Yes
- Other Pals
- 299
- Mammorest breeding recipes
- 774
- Fixed passives on Mammorest
- 1
- Custom slots available
- 3
- Verified evidence claims behind this verdict
- 2
- Mammorest parent pairs with a direct source of Heavyweight
- 774 of 774
Heavyweight breeding route for Mammorest: 774 of 774 parent pairs include a direct source (Fuack Ignis, Moldron Cryst, Whalaska Ignis, Selyne, Celaray Lux, Dualith Noct, Celesdir Noct, Knocklem, Eidrolon, Solenne, Renjishi, Lyleen, Croajiro, Aegidron, Bastigor, Shaolong, Silvance, Dandilord, Jetragon, Panthalus, Croajiro Noct, Petallia Ignis, Relaxaurus Lux, Kitsun Noct, Tetroise, Splatterina, Lapure, Mycora, Herbil).
Why
- Heavyweight is a fixed passive on Mammorest in v1.0.3; every Mammorest has it.
How Heavyweight can be acquired on Mammorest in v1.0.3
| Current method | Available for Mammorest? | Note |
|---|---|---|
| Fixed / innate | Yes | Heavyweight is fixed on Mammorest — it is born with it. |
| Random pool (catch or hatch) | No | Heavyweight: no verified rule puts it in the random pool for Mammorest. |
| Implant (Surgery Table) | No | Heavyweight: no verified item method grants it here. |
| Breeding inheritance | Yes | Mammorest can inherit Heavyweight along a verified breeding chain, under the standard passive-inheritance rule this dataset has not independently sourced. |
| Component | Type | Status | Current method | Blocker / note | Evidence |
|---|---|---|---|---|---|
| Heavyweight | passive skill | Currently obtainable | it is a fixed passive | Heavyweight is a fixed passive on Mammorest in v1.0.3; every Mammorest has it. | B B · 2 sources |
What changed since v0.7.0
| Component | In v0.7.0 | In v1.0.3 |
|---|---|---|
| Heavyweight | Needs verification — | Currently obtainable it is a fixed passive |
How it reaches this Pal
- Heavyweight is fixed on Mammorest — it is born with it.
- Every Mammorest in v1.0.3 is born with Heavyweight, so none of its 774 breeding recipes has to carry it.
- 5 of 299 shown
What you can do now
- Heavyweight is fixed on Mammorest — it is born with it.
- Alternative: Mammorest can inherit Heavyweight along a verified breeding chain, under the standard passive-inheritance rule this dataset has not independently sourced.
Evidence & freshness
Sources (2)
- PalCalc database (v27, Palworld 1.0.x) tylercamp and contributors B retrieved 2026-08-23 supports: facts used for Mammorest in v1.0.3 Evidence detail
- Palworld Wiki Cargo data tables palworld.wiki.gg contributors B retrieved 2026-08-23 supports: facts used for Mammorest in v1.0.3 Evidence detail
Related questions
Did this change with Palworld v1.0.3?
Yes. In v0.7.0 this build answered UNVERIFIED; in v1.0.3 it answers CURRENTLY_OBTAINABLE.
How many sources verify this answer?
2 registered sources, graded B or better and last verified 2026-08-23.
- Target
- Mammorest
- Component
- Heavyweight (passive skill)
- Game version
- Palworld v1.0.3
- Status
- Currently obtainable
- Reason
- it is a fixed passive
- Last verified
- 2026-08-23
- Source
- PalProof