The Ultimate Weapons are the most powerful armaments available for each character, boasting the highest Attack (ATK) values and often unique properties. Obtaining them typically involves specific subquests, high-rank rewards, or hidden locations. These weapons are crucial for tackling the game's toughest challenges and post-game content.

- Flick's Ultimate Sword: Sigmund (ATK 170, LevelReq: 62). Location: See [ULT] section in game.
- Tumble's Ultimate Flail: Excalibur (ATK 170, LevelReq: 64). Location: See [ULT] section in game. Note: Despite the name, this is Tumble's ultimate flail.
- Pop's Ultimate Weapon: (COMPLETE) (ATK 170, LevelReq: 65). Location: See [ULT] section in game. Description unknown, but likely a powerful magical staff or bow.
- Wanderer's Ultimate Hammer: Ragnarok (ATK 170, LevelReq: 60). Location: See [ULT] section in game.
The specific locations for these ultimate weapons are often tied to challenging post-game content or very difficult subquests. Some sources indicate that the Ultimate Flail for Tumble can be found in a specific subquest, while others are likely tied to achieving Gold Ranks on the hardest missions or completing all Benevodon quests. Always check the [ULT] section in the game's guide for precise location details once you are ready to pursue these legendary armaments. Equipping an ultimate weapon will significantly boost your character's offensive power, making endgame content much more manageable.