Admiral Milius is a disgruntled Starfleet admiral who goes AWOL, resentful of his dull assignments, until Ransom and Boimler bring him in.
Milius is a Starfleet admiral who goes absent without leave in The Best Exotic Nanite Hotel. Commander Jack Ransom brings Boimler along to locate him, and Boimler suspects Ransom intends to use him as cannon fodder.
Milius resents Starfleet for assigning him uninteresting missions, and Boimler briefly sides with him. After Ransom explains he chose Boimler for his preparedness and bravery, Boimler helps subdue the admiral. Milius is happy when he is assigned to help a microscopic Starfleet ship from a parallel universe return home.