Pet Muuns System
The Pet Inventory can be accessed by pressing [Y].
All pets stored here are exclusive to this system and cannot be placed in the vault or standard inventory.
Within this inventory, you can level up, equip, or unequip your Muun pets.
Traditional mounts such as Horses, Fenrirs, Unirias, and Dinorants are not part of this system and remain in the regular inventory.
Only Muun pets are managed through the Pet Inventory.
DeviasMU uses the standard Muun system with a few minor adjustments explained in this guide.
Inventory Slots
- Main Slot: Displays the pet visually next to your character
- Secondary Slot: Does not show a visual, but applies the pet’s option effect
Restoring Muun Life
- To restore Muun HP, use 1x Jewel of Life directly on the Muun. Success rate is 100%.
- Muun pets, evolution stones, and Muun energy cannot be traded or sold in personal stores.
Types of Muun Pets
- Hero Pets: Unlock a third slot, allowing the use of 1 Hero + 2 additional Muuns.
- Tempest Pets: Provide a x2 buff for 15 days. With MU PASS Premium, this can scale up to x5.
- Common Muuns: Standard pets without special bonuses.
Basic options for Muun Tempest | |
| For Muun Tempest options, apply the following options. | Skill Attack Power |


All muuns are permanent. have the extra bonus of 15 days 2x. and can be combined with the premium battle pass up to 3x.
| MUUNS [HERO] | Day of the week | Option |
|---|---|---|
| Silvester | Mon-Tue-Wed-Sat | Atk/Magic/Curse Power |
| Magician | Thu-Fri-Sun | Atk/Magic/Curse Power |
| Hellmine | Mon-Tue-Wed-Sat | Max HP |
| Kundum | Thu-Fri-Sun | Max HP |
| Nightmare | Mon-Tue-Wed-Sat | Max HP |
| Balrog | Mon-Tue-Wed-Sat | Max SD |
| Medusa | Thu-Fri-Sun | Max SD |
| Selupan | Thu-Fri-Sun | Max SD |
| Gargoyle | Mon-Tue-Wed-Sat | Damage Reduction |
| Swordsman | Mon-Tue-Wed-Sat | Damage Reduction |
| Commander | Thu-Fri-Sun | Damage Reduction |
| Bell | Mon-Tue-Wed-Sat | Elemental Damage |
| Knicks | Thu-Fri-Sun | Elemental Damage |
| Illusion | Thu-Fri-Sun | Elemental Damage |