Calvin Lee Vail (born 1995 or 1996), known online as LeafyIsHere or simply Leafy, is an American former Internet celebrity, best known for his YouTube channel which focused on reaction content.

[4] Beginning in 2016, Vail was involved in several conflicts with other YouTubers which led to allegations of cyberbullying and various violations of website terms of service.

On the channel, Vail mainly commented on gossip involving online content creators and made videos telling life stories.

[8] In 2016, YouTuber iDubbbz featured Leafy in an episode of his Content Cop series, accusing him of cyberbullying in his videos, among other criticisms.

[7][13] After a more than two-year-long hiatus, Vail returned to YouTube with a video insulting iDubbbz in March 2020, following which he resumed posting frequently.

Earlier that day, Vail had tweeted about receiving a strike on his account from Twitch for "hateful conduct and threats of violence against a person or group of people".