Simon Chuu, known by the username SimonOrJ, is a Korean recurring Bulbapedia (and Wikipedia) article editor who like to fix grammatical, pronunciation, and translation errors.
Simon decided to make this account after spotting translation error on "Thunderbolt". Instead of "백만볼트", somebody wrote "아리언테일" as the Korean translation of this move. He made an account and fix the error.
After getting used to MediaWiki codes, I started to add Korean translations and pronunciations for a lot of pages. I'm not perfect (just like everybody), so if there's any error in his work, notify him in his User Talk page.