A person pretending to be somebody he is not

A. Imposter

B. Liar

C. Rogue

D. Magician

Answer: Option A

Solution(By Examveda Team)

One word substitute is Imposter.

Imposter: a person who pretends to be someone else in order to deceive others, especially for fraudulent gain.
Liar: a person who tells lies.
Rogue: a dishonest or unprincipled man.
Magician: a person with magical powers.