Danila Sergeevich Klenin is a Russian video blogger, inventor, TV presenter, showman, director, screenwriter. Known under the pseudonym "Danya Kraster". Popularizer of DIY and scientific approach. Participated in the creation of props for the MegaGalileo program (2015). Since November 2020, he has been the author of the experiments section and the host of the Galileo and Experiments TV programs on the STS TV channel. Member of popular Youtube projects: "Wild records", "KlickKlak show", "We are from the 90s" and others. Founder of the BNB DIY movement.