>about to fight Mewtwo
>used Master Ball long ago, gonna do it legit and throw a million Ultra Balls at him if need be
>paralyze him with Ampharos, then switch to Umbreon and drain his HP
>his only offensive move can't damage my Umbreon
>weaken him to the point where I can't damage him anymore without killing him
>he refuses to get caught
>eventually has to use Struggle
>kills himself
>reload earlier savestate and try again
>same shit happens three times
>reload state, give me masterballs with action replay code, catch the fucker

I tried

Also why did they give Mewtwo that moveset in HGSS? If I remember correctly back in RBY he had Psychic, Recover, Swift and Barrier. In Gen 4 you can fight him with a Dark mon and he simply can't touch you