

Go to the developer console by hitting ~ (or the key above Tab) and type the following codes for the desired effect. This will allow you to open the cheating console. Click on a character model to select that character, then press Q to close the main GMod menu.

Click the Model entry under the Player header of the options menu to open the character selection menu. To begin you must first go to the "Options" on your game menu and select the "Keyboard" tab, then select "Advanced.", Finaly you check off the "Enable Developer Console (~)" and select "Ok" and select "Apply" on your "Options" menu. Click the Options tab in the upper-right corner of the main GMod menu to open the options menu. Upon the release of GMod 13, the secret phrase was changed to bloxwich.
