Random Pokemon Generator is a free, fan-made web toolkit for Pokemon fans. Roll random Pokemon with filters (type, generation, legendaries), build challenge teams, get a starting partner for a nuzlocke run, play smash-or-pass, spin the roulette wheel, or check shiny odds. Everything runs in the browser, no install, and results have shareable links. Japanese pages are available under /ja/. It is an unofficial fan project.
The site started as a simple random Pokemon picker for challenge runs: most generators were slow, ad-heavy, or had no filters. It grew into a small toolbox that covers team picking, nuzlocke starts, a smash-or-pass game, a roulette wheel and shiny odds, all free and browser based.