Visit each KHUX world and find hidden enemies!

Visit each KHUX world and find hidden enemies! is a series of twenty-eight quests in Kingdom Hearts Unchained χ / Union χ, in which players can earn Jewels by finding hidden enemies. In the English version, it was available from April 1 to 15, 2018.

• The Hidden Menace: Beginner #1
• The Hidden Menace: Beginner #2
• The Hidden Menace: Beginner #3
• The Hidden Menace: Beginner #4
• The Hidden Menace: Beginner #5
• The Hidden Menace: Beginner #6
• The Hidden Menace: Beginner #7
• The Hidden Menace: Intermediate #1
• The Hidden Menace: Intermediate #2
• The Hidden Menace: Intermediate #3
• The Hidden Menace: Intermediate #4
• The Hidden Menace: Intermediate #5
• The Hidden Menace: Intermediate #6
• The Hidden Menace: Intermediate #7
• The Hidden Menace: Advanced #1
• The Hidden Menace: Advanced #2
• The Hidden Menace: Advanced #3
• The Hidden Menace: Advanced #4
• The Hidden Menace: Advanced #5
• The Hidden Menace: Advanced #6
• The Hidden Menace: Advanced #7
• The Hidden Menace: Legendary #1
• The Hidden Menace: Legendary #2
• The Hidden Menace: Legendary #3
• The Hidden Menace: Legendary #4
• The Hidden Menace: Legendary #5
• The Hidden Menace: Legendary #6
• The Hidden Menace: Legendary #7