Who was the first companion of the Ninth Doctor?

The first companion of the Ninth Doctor was Rose Tyler. Played by Billie Piper, Rose met the Ninth Doctor in the opening 2005 episode “Rose,” which relaunched Doctor Who after a long absence from regular television.

Rose was a 19-year-old shop assistant from London when the Doctor rescued her during an Auton attack at the department store where she worked. After helping him defeat the Nestene Consciousness, she accepted his invitation to travel in the TARDIS. Their first journey together took them to the year five billion to witness the destruction of Earth.

Rose became the emotional centre of the Ninth Doctor’s short television era. She helped reveal his grief after the Time War and reminded him of his compassion. Viewers sometimes confuse her with Martha Jones or Donna Noble, but both travelled with the Tenth Doctor. Amy Pond first travelled with the Eleventh Doctor.