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|Sub Type||Boss Monster|
| 80 / |
|Summoned By||wave 7 of Old One's Army|
| Betsy Trophy|
|Sky Dragon's Fury||25%|
| Treasure Bag(Betsy)|
- Its attack pattern is similar to Duke Fishron.
- Betsy's attack patterns include swooping down at the player, breathing fire, and circling the area.
- She doesn't intentionally target the crystal, focusing on the player instead.
- When she is defeated, the old one's army event ends.
- This boss is based on the dragon boss Betsy in Dungeon Defenders 2.
- Added to the game.