Wilfred Mott (Wilf, played by Bernard Cribbens is the Grandfather of Donna Noble. A believer in extraterrestrial life himself, Wilfred was proud of his granddaughter's adventures and helped to keep them a secret from her overbearing mother. He later became the Tenth Doctor's final companion in "The End of Time". Wilf 's first appearance was in 2007 and his last in 2010.