Overview
- Rarest of Materials is a collection comprised of eight rare ores found on Oolong Island. These ores can be obtained from collection nodes found on Oolong Island.

Collectibles
- " What is it about scientists and their crazy building materials? Mad scientists are that much more crazy, and rare elements are everywhere to be found on Oolong island. Collect them so we can start to understand what they're working on."
Map
Mail Messages
- Upon completion of this collection players receive a message from The Question or The Riddler, accessible from any Mail Terminal.
- Heroes:
- Villains:
Mail Messages
Related article links (1)
Vacationer's Shirt| From: The Question |
|---|
| " They couldn’t…They wouldn’t…Do you know what these elements you’ve collected can make when combined? Do you understand? Those madmen! First Oolong… then the world!" |
| Attachment: Vacationer's Shirt |
Mail Messages
Related article links (1)
Vacationer's Shirt| From: The Riddler |
|---|
| "' " |
| Attachment: Vacationer's Shirt |
Item
- This collection rewards the player with the Hawaiian Shirt item.
