Shalek

He is a Knight on Island of Gloob from Planet Castela.

History:
He first appeared as an old man,who already met the Doctor,and guided them.

First meet with the Doctor:
In his youth,when he first met the Doctor,he thought him of being an intruder and put him in the prison.Later on,he grew to like The Doctor after he saved the island from the Dragons.

"Death":
He went in a fire of a dragon in order to create a paradox and destroy the two dragons.After the paradox happend,and the dragons never existed,there was no fire to kill Shalek,so he came back to life.

Travels with the Doctor:
Coming back to say "Thanks",the dragons started dragging the Tardis to their universe,he was also helping with the resistence of not going.He then agreed to travel with the Doctor.

More to be added soon.