influencer
A person who influences others, especially in marketing or social media contexts. Often used as a Japanese equivalent of the loanword インフルエンサー.
See also: インフルエンサー
She is a famous influencer with many followers.
企業は新製品の宣伝に影響者を起用した。
The company hired an influencer to promote the new product.
Compound of 影響 (influence) and 者 (person).