He has this catchphrase "yosha lucky/that's so lucky" he shouts at the top of his lungs, often when tho gs look bad. The Fandom generally hates him for being a one note catch phrase annoying red.
Until they see his origin story, the boy lost his parent, his who planet, he was a crying child living in rubble. Demed the unluckiest boy in the universe.
Then he started to shot the phrase, not focusing on the bad but finding sone shread of good in the absoloust worst. He litterally turned his bad luck into good with here force of will. The catch phrase is a statement to the universe that they will make it though