Rory Williams, The Last Centurion
I think this was an easy one. Rory is definitely my favourite companion. He is completely underrated by everyone around him, but he is the epitome of a good soul. Him guarding the Pandorica and waiting for his wife, Amy Pond, is the ultimate act of love. He also slowly grows into his own on his journey with the Doctor. He finds his place in the universe. He is used both as a comedic device and as an emotional crutch. I have yet to find a female companion who can compare to how lovely Rory Williams is/was.
– Cumuloq ❤