CobbleBuilds: Leaders [Cobblemon Addon]

CobbleBuilds: Leaders [Cobblemon Addon]

Gym structures and leaders for Cobblemon

by
70.4K Downloads
datapackfabricforgeneoforgequiltadventuregame-mechanicsworldgen
Rent Server with this Mod

Screenshots

Water Gym ft. Leader Cress
Grass Gym ft. Leader Cilan
Fire Gym ft. Leader Blaine.
Poison Gym ft. Leader Roxie
Electric Gym ft. Leader Elesa
Rock Gym ft. Leader Brock

About this Mod

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CobbleBuilds is an addon for Cobblemon that features content related to gyms, such as gym structures, leaders, trainers and badges.

Please note

This project is still in alpha. Things are likely to change internally, possibly leading to lost progress or full save corruption. We highly recommend making a world backup before installing or updating the data pack so you can revert changes if things go wrong.

Progression

Gym badges are separated into four tiers: Copper, Gold, Diamond, and Netherite. Each unique leader you defeat in a gym rewards you with the next badge tier for that gym.

Each gym has four possible leaders and multiple trainer classes. Which ones spawn at a given time are based on the current trainer rank of the players inside.

Your rank increases with each trainer you defeat. You can check your trainer rank on your trainer card located on the advancements screen.

Trainer parties also vary in scale and difficulty based on the player's current party and trainer rank.

Current Gyms and Leaders

The pack currently includes 12 gyms and 24 gym leaders picked from across the different generations of the Pokémon games.

Bug Electric Fighting Fire Ghost Grass Ice Normal Poison Rock Steel Water
Bugsy Clemont Brawly Blaine Allister Brassius Brycen Larry Janine Brock Byron Crasherwake
Burgh Elesa Chuck Chili Fantina Cilan Candice Lenora Klara Gordie Jasmine Cress
Katy Lt. Surge Korrina Flannery Morty Erika Grusha Norman Koga Roark Molayne Misty
Viola Wattson Maylene Kabu Ryme Gardenia Pryce Whitney Roxie Roxanne Peony Wallace
Extras

CobbleBuilds: Sounds

An optional resource pack addon for CobbleBuilds that adds remixes of battle themes from the original games composed by Zame.

Special Thanks

Instrafe

His addon Cobbled Trainers has helped us a lot in understanding the Cobblemon NPC system.

Inazuma

For making Steel Gym Leader Jasmine's texture.

Available Versions

CobbleBuilds 0.1.1-hf.1alpha
MC 1.21, 1.21.1, 1.21.2, 1.21.3fabric, forge, neoforge, quilt
May 30, 2026
CobbleBuilds 0.1.1-hf.1alpha
MC 1.21, 1.21.1, 1.21.2, 1.21.3datapack
May 30, 2026
CobbleBuilds 0.1.1alpha
MC 1.21, 1.21.1, 1.21.2, 1.21.3fabric, forge, neoforge, quilt
February 16, 2026
CobbleBuilds 0.1.1alpha
MC 1.21, 1.21.1, 1.21.2, 1.21.3datapack
February 16, 2026
CobbleBuilds 0.1.0alpha
MC 1.21, 1.21.1, 1.21.2, 1.21.3fabric, forge, neoforge, quilt
January 26, 2026

How to Install CobbleBuilds: Leaders [Cobblemon Addon] on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.3).

3

Install Mod

Open the mod browser in the dashboard and search for "CobbleBuilds: Leaders [Cobblemon Addon]". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

1.21.3, 1.21.2, 1.21.1 (+1 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

CobbleBuilds: Leaders [Cobblemon Addon] server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.3). You can switch loaders with one click in the panel.

Is CobbleBuilds: Leaders [Cobblemon Addon] compatible with datapack and fabric and forge and neoforge and quilt?

CobbleBuilds: Leaders [Cobblemon Addon] officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.3, 1.21.2, 1.21.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with CobbleBuilds: Leaders [Cobblemon Addon] – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if CobbleBuilds: Leaders [Cobblemon Addon] consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install CobbleBuilds: Leaders [Cobblemon Addon] with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU General Public License v3.0 or later
Server-side
Required

Supported Versions

1.21.31.21.21.21.11.21