Giant Rook

Any modders out there know how to make a giant rook? About 2 or 3 times the size? Or make everything except rook smaller? Somewhere inbetween? I first became interested in this game years ago when I saw on the Rook on the cover of a magazine, he looked about 20x the size of minions. It'd be great to see that in game. I'm not interested how it would affect balance, it'd be too awesome to care