Mike Majlak (born January 13, 1985) is an American YouTuber and author. He is best known as the co-host of the Impaulsive channel alongside Logan Paul. He also co-authored the USA Today–bestselling memoir The Fifth Vital.

Majlak was born and raised in Milford, Connecticut, the son of Michael and Robin Majlak.^[1][2] After he spent his late teens and early twenties addicted to OxyContin and heroin, he overcame substance abuse in 2010.^[3]

Majlak began his career in marketing, working as the marketing manager for furniture retailer LoveSac, where he met social media personality Logan Paul.^[4] According to The Verge, after Paul's suicide forest scandal in Japan, he hired Majlak to "babysit" him,^[5] causing Majlak to buy a house in Los Angeles and move there.^[6] Majlak found success through his work with Impaulsive, where he is an executive partner and co-hosts with Paul.^{[7][8][9][10]} In addition to Impaulsive, Majlak maintains his own YouTube channel and has a social media following of over 6 million followers.^[11][12][13] In 2020, he co-authored his USA Today–bestselling memoir The Fifth Vital with Riley J. Ford.^[14] In his book, he details his experiences with opioid addiction and recovery.^[15][16]

He was in a relationship with former adult film actress Lana Rhoades.^[19][20][21]