Oh boy.
It is not so much an event as it is a player avatar. Go to "options" while in-game. Click "avatar."
Change your avatar to look like creepbear.
Place a vehicle spawn in the map. Spawn a standard bot.
Type in the chat: /applyav. Press enter.
Wrench the vehicle spawn and go to events. You should see a list of appearance changing events. Click "send."
Respawn your standard bot.
It now looks like creepbear.
