The Box of Delights (TV series)
Patrick Troughton was a familiar face on BBC TV from playing the Second Doctor in "Doctor Who"; a contemporary "Blue Peter" feature on the drama makes the connection that in the role of Cole Hawlings, the kindly Punch and Judy Man, Troughton was playing another mysterious, scruffy time traveller. Renny Rye noted that Troughton "who was my favourite Doctor Who...had a quality that is unsurpassed, I think, as someone to pull you into a tale."
Romana (Doctor Who)
As a Time Lord, Romana is able to regenerate, having had two on-screen incarnations with somewhat different personalities (dubbed Romana I and Romana II by fans). Romana I was played by Mary Tamm from 1978 to 1979. When Tamm chose not to sign on for a second season, the part was recast. Romana II was played by Lalla Ward from 1979 to 1981. A third incarnation of Romana has been depicted in some of the spin-off novels, and a fourth (performed by Juliet Landau) has been featured in several audio dramas released by Big Finish Productions in 2013 and 2014, and appeared again in early 2015.