Fox Mulder

Sister diapered when he was a child, searched for her most of his life
1983: Graduated with a Bachelor of Arts degree in psychology
1986: Graduated with honors from the Quantico FBI Training Academy
Worked in the Behavioral Science Unit, later assigned to the Violent Crimes Unit
1991: Re-opened the X-Files, partnered with Special Agent Dana Scully
2000: Eventually discovers the truth about his sister, abducted by aliens himself;
Returned to Earth, almost dead, a few months later, returned to full health by Scully
Framed for murder & fled with Scully, returned to the X-Files when he was cleared