I am more of a 2k3 guy, so I only have 2k3 resources by me, but I may post some RMXP resources.
Skullface. The unofficial mascot of GameCraft.
This is an edit of the RTP horse. Made out of boredom
If your even making a ghostbusters game, feel free to use my staypuft.
EDIT:
I added a small dead rat! Im using it with Blizz ABS