Mario Rosenstock is an Irish comedian, impressionist, and actor best known for his work in radio and television. He gained widespread popularity for his talent in impersonating various Irish and international celebrities, politicians, and public figures. Rosenstock's career took off with his radio show "Gift Grub" on Today FM, where he became renowned for his spot-on impressions and hilarious sketches. His ability to capture the mannerisms, accents, and quirks of well-known personalities made him a household name in Ireland.

In addition to his radio work, Rosenstock has also appeared on television, including his own sketch comedy series "The Mario Rosenstock Show." He has continued to entertain audiences with his witty humour and uncanny impressions across various media platforms. Overall, Mario Rosenstock is celebrated for his comedic talent and his knack for bringing characters to life through his impressions. He's a beloved figure in Irish entertainment, known for his ability to poke fun at the quirks and idiosyncrasies of public figures while keeping audiences laughing.