noun
natural airhead; person prone to silly mistakes
Slang abbreviation of 天然ボケキャラ. Describes someone whose unintentionally odd or clueless behavior is seen as endearing or funny, often in entertainment or casual conversation.
彼女は天然キャラで、いつも周りを笑わせている。
She's a natural airhead and always makes everyone around her laugh.
あの芸人は天然キャラとして人気がある。
That comedian is popular as a natural airhead character.