- Moonstone was released on December 16, 2013 as a lockbox hero during Special Operation 15.
- Moonstone's 8th cover's description was copied from Thane's 8th cover's description but was corrected later.
- She used to be the only hero to have a full round action that has charging up. It is no longer a full-round action, but still prevents her use of other moves.
- The eighth comic book cover in the Toolbox collection is also the seventh cover in the Psycho collection.
- Both the Bloodstone used by Elsa Bloodstone and the Moonstone used by Karla Sofen are said to have originated at the Lifestone Tree.