Grey's Anatomy has seen its fair share of unforgettable characters, but some exits have left fans wanting more. Nathan Riggs, introduced in season 12, is one such character.

However, some characters, even if not gone for good, return to offer viewers a dose of nostalgia. One such character is ...

Grey's Anatomy can right one of their wrongs by bringing back a forgotten doctor and giving them the closure they deserve 10 ...