white crow; maverick; outsider (Alex Lilo); outlier (a person or thing that is very different from others of the same group; an unlikely event george serebryakov); odd man out (pivoine); odd duck (crimea); white raven (as in, "as rare as a white raven" • such events are as rare as a white raven Рина Грант); atavistic (не вписывающийся в рамки окружающего и здравого смысла kalich411); the black sheep of the family; the odd one out (rbth.com Windystone); sore thumb (To stick out like a sore thumb is to not blend in with your surroundings or to not match what others look or dress and act like • Don’t make them feel like a sore thumb for not pandering to the “norm” of drinking culture vogeler); odd man out; odd out

Gruzovik

a rare person

Игорь Миг

rogue element

idiom.

black sheep (Eva); rara avis (Drozdova); odd fish (Himera)

inf.

extraterrestrial (K_Kolodii); odd ball

jarg.

sore thumb (Tumatutuma)

lat.

alba avis (Anglophile); albus corvus (Anglophile)