ErrorMons
Java data pack listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.
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⬇ Download on ModrinthMissingno Is invading Cobblemon, with this addon you can get Missingno and its 5 variants in cobblemon
currently missingno is only available through commands
heres a guide on how to unlock each variant:
Missingno yellow: use a thunder stone on regular missingno at level 12
Missingno Ghost: Have Lugia in your party
Missingno aerodactyl: Take 27 damage in battle
Missingno Kabutops: Get freindship 182 on your missingno
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20.1, 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
- Downloads as Errormons 1.1.zip
- Download size: 164 KB
- Download link checked 30 Oct 2026 — working
These come from our own check of the pack file, not from the source page.