8. Martha Jones, 10th Doctor's Companion
Martha Jones was the companion who came after Rose Tyler's sad ending, she seemed to be in love with The Doctor and wanted to impress him as much as she could. Even thought she knew The Doctor didn't love her in that way, just as a friend, she still stayed pretty loyal to him. She eventually became quite an important person in helping The Doctor survive everything The Master was doing. Although, she did leave him...she still seemed like she wanted to stay with him. You could see the care in her eyes. She was awesome and someone who'd most likely be loyal to your forever even if you don't talk enough.