Help:Editing creatures
Go to the creature template and edit that, copy all the content of that page to your clipboard
You can find the creature template here: Template:Creature
Start a new page and name it like this: Creature:<name> (Where it says <name> fill in the full name of the mob as it is shown in game)
Edit the page and paste the content of your clipboard to this page
Fill in all the missing data on your newly created creature page
For help with the table go here: Help:Maturity_table
If the creature is not yet in the main creature page of the planet then edit that page and add the following line to it:
|- | align="center" background="#E6E6E6"|File:Moblist thumb none.png || [[creature:<name>|<name>]] | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | - | align="center" | -
Where it says non.png, you can add a picture of the mob, just remember that it will be scaled way down, so be sure it looks good.
Where it says <name> fill in the full name of the mob as it is shown in game.