For its upcoming season finale, Doctor Who is, for the second year in a row, pulling out a very deep-cut villain from the show’s rich past. But this time, the baddie who threatens the Doctor is a foundational character for the entirety of Who canon. Here’s why the final moments of “Wish World” reboot one very old Who character, and why the return of this character represents a bigger reset for the show than you might think. Doctor Who “Wish World” Ending ExplainedThe Doctor (Ncuti Gatwa) is trapped in “Wish World.” But not for long. Because Omega tried to steal the Doctor’s biodata way back in 1983, could Omega regenerate as a previous Doctor?