Blue-skinned Deep Guard can travel to any depth, therefore she is able to detect any submarine, while at the same time enjoying Commando-type <l:6,118>invisibility<e>. Her good defence combined with unique ability to <l:6,20>Fortify<e> underwater makes her ideal for protecting <l:6,105>undersea cities<e>. She is also an amphibious unit and can move across land.