To add a new category to a page you can click the Category button at the bottom of the page and type in the name you'd like your category to be called.
A full list of existing categories can be found at Special:Categories.
“Here you can find links to the various monsters found in Monster Story, sorted by color. For the...Monsters
“Neighbors can be added if you know their Storm8 IDs. Storm8 IDs are different from the island...Neighbors