Connell gives us great physical descriptions of both Ivan and of General Zaroff, but he leaves Rainsford's physical description, pretty much up to the imagination. We can imply a great deal from Connell has given us, but there is nothing that says for certain what he looks like. We know that Rainsford must have tanned skin because he has spent the better part of his life outdoors hunting game. He probably has a rugged weathered look about him. He has good eyes because we know his aim is good or he wouldn't be a world renowned hunter, but we don't know the color. We know he must be physically strong and somewhat muscular or at least has muscular tone to his body because he swims a great distance to Ship Trap Island and he is not averse to surviving in the wilderness. He walks and runs a great deal while he is being hunted as well so it would take someone physically strong to do that for a sustained amount of time. He has a disarming smile that he uses when he first meets Ivan and General Zaroff. Other than that we don't really know much at all.