Yvonne Quake 2 model
Download Yvonne model (1 mb)
See the skins available with this model
The Yvonne model is a good replacement for the marine you usually look like in Quake 2. As long as other people of downloaded this model, you will appear as Yvonne from Alt-Ctrl-Dimension when you deathmatch.
How to use it:
Just download the zip and unzip it into a directory called "yvonne" in your Quake2\baseq2\players directory... so the files would be in Quake2\baseq2\players\yvonne. Now to play as the alien, start up Quake 2 and go to the multiplayer menu. Choose the bottom option "Player setup". Go to model, and scroll right until you get to Yvonne. Go down to skin and do the same until you find the skin you like. Viola! Exit the menus and you're now Yvonne.