The Rooks are lookouts at the corners of the kingdom, and are similar to the watch towers of a castle. Compared to the Queen, the Rooks are the next most powerful. If anything happens to her "you know, if she's taken by the bad guys" the two Rooks together are mucho strong.
They are not necessarily graceful, but they radiate power. They are not loud,
not boisterous. They don't make a lot of noise, but they are:
Otherwise, they mind their business and move vertically or horizontally, in a straight line, as many boxes as they want.