Greston Paltraki
From Tardis Wiki, the free Doctor Who reference
Greston Paltraki was found, alone, on his ship by the Thirteenth Doctor, Yaz, Ryan and Graham. Because he had been exposed to the psychotropic waves on the planet Ranskoor Av Kolos, Paltraki couldn't even remember his name. (TV: The Battle of Ranskoor Av Kolos)
