Alex Apollonov is an Australian YouTube personality and comedian, better known for his online presence as I Did a Thing, and his YouTube channel of the same name. He is also the co-star of Boy Boy which he created with fellow comedian Aleksa Vulović who also stars in his videos. Much of Apollonov's content involves using his engineering and fabrication skills to design and build a variety of projects, including recreating the Utah monolith in Australia, simulating the Aurora Borealis in his kitchen with a high voltage transformer to parody The Simpsons, and making a scaled-up chainsaw powered Beyblade with a giant circular blade that is spun by a chainsaw motor. Other projects have included building a laser guided drone that drops steel darts, creating a hammer that uses blank rounds to drive nails, and mounting a submachine gun to a robot dog.