CurseForge · Minecraft mod
TensuraLeonBoss
Add a new Leon boss to Tensura
Quick answer
Which TensuraLeonBoss release should I use?
TensuraLeonBoss foxboss_leon_cromwell-1.0.1.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 5 required mods have matching files.
Where it goes
Is TensuraLeonBoss required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does TensuraLeonBoss foxboss_leon_cromwell-1.0.1.jar need?
foxboss_leon_cromwell-1.0.1.jar. Change the file and its required mods may change too.
Install Tensura: Reincarnated, SmartBrainLib (Forge/Fabric/Quilt), ManasCore, GeckoLib and 1 more first. We found matching files for this game-version and loader setup. 4 come through another mod in the chain.
4 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add TensuraLeonBoss without breaking your instance.
Built for TensuraLeonBoss foxboss_leon_cromwell-1.0.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use foxboss_leon_cromwell-1.0.1.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Tensura: Reincarnated, SmartBrainLib (Forge/Fabric/Quilt), ManasCore, GeckoLib and 1 more first. We found matching files for this game-version and loader setup. 4 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside foxboss_leon_cromwell-1.0.1.jar. It opens that exact file at the source.
About this project
What does TensuraLeonBoss add?
Description
This is a Tensura addon that adds a new boss, Leon Cromwell, to Tensura. By default, this boss will spawn in the wild. A dedicated structure for this boss will be added in the future.

Development Team
- Lead Designer: AblazeAQZL
- Model Artist: Aika
Project description from CurseForge.
Pick your setup
TensuraLeonBoss by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
TensuraLeonBoss versions and loaders
foxboss_leon_cromwell-1.0.1.jar
23 Oct 2026
foxboss_leon_cromwell-1.0.0.jar
22 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.