All members of Lloyd's family (excluding Misako) have, or once had powers over all four Elements of Creation, which manifest as Creation, Golden Power, or Destruction. While Lloyd gave up his Golden Power, Energy became one of the most powerful elements.
Most of the members of this family have no surname. Wu and Garmadon have no last name, and Lloyd inherited his father's name as his own last name. Misako's last name, if she has one, is unknown.