Tutorial
1)Run Harepacker.
2)Set to EMS\KMS.
3)Load Mob.wz.
4)Find the ID of the monster which you want to be DEM'd.
Note: I'll be using Slime(0210100) as an example.
5)

6)Edit
lt = -999999999,-999999999
rb = 999999999,999999999
7)Save Mob.wz and you're done!
Before:

After:

Notes
-You need a godmode as the monster's size has been increased.
-It don't work to well if the map is very big.
Credits
-Boredness for finding the method.
-Boredness for writing this guide.
Important: Kindly backup your mob.wz before editting!
I found this myself, many may have found out this mehod in a TWms forum.
Happy Deming and ABUSE it!
