UPDATE: This mod now works with the Portal 2 Summer Sale Update.
Please backup any files that may be overwritten before extracting the .rar file.
This mod adapts the look of P-body in multiplayer and
singleplayer mode to look like the awesome smiley!
Extract the contents of this .rar file (excluding ReadMe) to
C:\Program Files\Steam\steamapps\common\portal 2\portal2
Delete the files placed in
C:\Program Files\Steam\steamapps\common\portal 2\portal2\materials\models\player\coop_bots
Or simply replace or edit the pak01_dir.gcf with the original backup.