Few shows have captured our collective imagination quite like Doctor Who. While fans love to debate the greatest Doctor, the real challenge is picking the best companion. With over 60 official travelers across the original and revival series, narrowing it down is no small feat. These characters aren't just sidekicks—they're the heart of the TARDIS, shaping the Doctor's journey and ours.
Our ranking focuses on those who served as co-leads, making a lasting impact on the series and its fans. Here are the greatest Doctor Who companions of all time, ranked.
10. Mel Bush
Played by Bonnie Langford, Mel Bush first appeared during the Sixth Doctor's trial, proving that the Doctor is better with her by his side. A cheerful computer programmer with a love for carrot juice, Mel's optimism balanced the Doctor's darker moments. She often took the lead, pushing the Doctor into adventures and showing bravery in dangerous situations. Her recent return as a mature UNIT member bridges classic and modern Doctor Who, making her a timeless favorite.
9. Yasmin Khan
Yaz, played by Mandip Gill, was the emotional anchor for the Thirteenth Doctor. A probationary police officer craving adventure, she brought investigative skills and a calming presence to the TARDIS. Her loyalty was unmatched, and her personal growth—especially in episodes like "Demons of the Punjab"—made her a standout. Though she shared screen time with other companions, Yaz's deep connection with the Doctor made her one of the most impactful.
8. Bill Potts
Pearl Mackie's Bill Potts is one of the most underrated companions. Introduced as a canteen assistant, she brought fresh energy to the Twelfth Doctor. Her journey was tragically short, but her role in the Doctor's redemption arc was crucial. Bill's intelligence and heart made her a fan favorite, even if her story ended too soon.
Stay tuned for the top 7, where we celebrate the companions who defined the series and stole our hearts.
