Works featuring "master of disguise" (1)
identity mix-up

When someone (or something) is mistaken for someone (or something) else, possibly because of deception, usually with comic results

alter ego

When someone either has an alternate persona/personality, or uses someone else as an alternate/double/substitute

undercover agent

When someone assumes a false identity and joins a household/group/organization for the purpose of spying

master of disguise

When someone has gained notoriety for an exceptional abilty to assume false identities