| Mask Name | Acorn Mask |
| Mask Name (jpn) | ドングリのお面 |
| Ability | none |
| Monster Priority | Large Monster |
| Attack Type | Mostly Melee |
| Dance Frequency | Average |
| Gathering Frequency | Average |
| Rage Attack | running attack or jump attack |
| How to get | Chacha initial equipment |
| Keyword | — |
| Mask Level | Slot |
| Level 0 | 1 |
| Level 3 | 2 |
| Level 5 | 3 |
| Mask Level | Status |
| Level 0 | Attack multiplier 1 |
| Level 5 | Attack multiplier 1.1 |