Ash Ketchum finally became the world champion and won the title of world's greatest Pokemon trainer. After 25 years, Ash Ketchum, the lead character in the Pokemon anime series, has finally become the world champion and won the title of world's greatest Pokemon trainer. The official account of Pokemon took to microblogging site Twitter to share the news. alongside a video congratulating the new star. The tweet has received over 4.3 million views and 3.6 lakh shares. He really is the very best Like no one ever was." Source - NDTV #pokemon