Rodney is the titular root.
He wasn't always a root, he used to be a human. A rather tall and handsome one, with an impressive mustache. But now he's a root, not unlike a mandrake.
He's about six inches tall, and has tubers where his arms and legs should be. To preserve what little dignity he still has, he has been dressed in a little surcoat bearing his coat of arms.
to be added