This brief tutorial will teach you how to create a behavior that implements true invisibility, that is to say, you can see your character, your enemies can't. It's a simple behavior modification based off of the Permanently Cloaked Behavior.
Go into the Data Editor and go to the Behaviors Tab.
Search for Permanently Cloaked.
Make a duplicate of this behavior and call it whatever you like.
Select your new behavior and go down to the field: Modification +, double click on it.
Go to the second list from the top that is labelled State Flags.
You should see that the flag Cloak is already checked, select Bury and enable it by checking the enabled box.
You can now give this behavior to any unit and you will be able to see it just fine, and enemy players will not!
@DieHardz: Go
Dark Templars specifically have a flag checked that says Permanently Invisible, go into the unit and uncheck that flag.
This brief tutorial will teach you how to create a behavior that implements true invisibility, that is to say, you can see your character, your enemies can't. It's a simple behavior modification based off of the Permanently Cloaked Behavior.