noun
mysterious person; strange figure
Refers to a person whose identity, background, or nature is unknown and often suspicious or eerie. Common in fiction, news, and urban legends.
昨夜、公園で怪人が目撃された。
A mysterious person was spotted in the park last night.
その怪人はマスクをかぶり、誰も正体を知らなかった。
The strange figure wore a mask, and no one knew their true identity.
Compound of 怪 (kai, 'mysterious, strange') and 人 (jin, 'person'). The kanji 怪 is associated with the supernatural or inexplicable, giving the word a nuance of eerie mystery.