It can be fought with the Ditto trick with a Special stat of 254 (hex:FE).
Trainer AI
Possibly due to the AI (though not confirmed), this glitch Trainer may print some random tiles on the screen each time a move is chosen. The AI pointer has not been checked, regarding if the behavior is taken from RAM. Can also freeze the game.
A battle, after the glitch Trainer AI has printed two "₽" characters on the screen.