It sounds like you're referring to the ROM hack called "Ultra Shiny Gold Sigma" (often jokingly misspelled or auto-corrected as "Utrashman" or similar). If so, here’s an interesting, concise review covering its highs and lows:
The Utrashman’s HP dropped to zero. It didn’t faint—it fragmented. Text scrolled: pokemon emerald utrashman rom
You are forced to beat the standard Hoenn Gym Leaders and Elite Four using only "trash-tier" Pokémon that you would normally ignore, making it a test of pure strategy. 3. How to Use It It sounds like you're referring to the ROM
: Includes 202 obtainable Pokémon, including both Latios and Latias after the Elite Four. How to Play the Emerald (TrashMan) ROM Text scrolled: You are forced to beat the
: It is frequently sourced from community-vetted archives like the Internet Archive to ensure file integrity. Why Pokémon Emerald Remains a Classic