Which Doctor Who Companion Changed The Most During Their Adventures?

Some may have had longer stints on the show than others, but all went through some serious developments on their travels with the Doctor.

Finn Morgan
Created By Finn Morgan
On Jun 2, 2017

Rose Tyler (Billie Piper)

Jack Harkness (John Barrowman)

Mickey Smith (Noel Clarke)

Donna Noble (Catherine Tate)

Martha Jones (Freema Agyeman)

Sarah Jane Smith (Elisabeth Sladen)

Wilfred Mott (Bernard Cribbins)

Amy Pond (Karen Gillan)

Rory Williams (Arthur Darvill)

River Song (Alex Kingston)

Clara Oswald (Jenna Coleman)