Dr Who’s visual continuity on the other hand is pretty strong when bringing back old creatures. Daleks still look like they did in 1965, the Sontarians as they did in 1973, the Zygons as they did in 1975, etc. The only race that got a major change was the Cybermen which was explained by being an alternative universe version. Even they eventually cycled round to their original 1966 look by the end of Capaldis era.