Legolas will both move the bones to Caer Glaem because personal experience with the dead and their ghosts already in Drabwurld (leave the Greenwood to him, eyyy he will unearth all that need it), and later do his best to fight the undead dogs (since his greatest fear will actually push him to do better etc). So either if your character wants to tag along, help or be saved by him, I'm game.