I figured that this kind of setup would only make even a lick of sense with a mentally unstable main character. Said character also needed 2-3 henchmen, a rival, and an elite four, so. Yeah, Emelious is pretty crazy.
Flareon (PKMN), PC Magus (CT), Melody (WA3) vs. Charmeleon, Ratatta, Hitmonlee, Zubat (Pokemon) - MWAHAHAHAHA.
Flareon (PKMN), PC Magus (CT), Melody (WA3) vs. Virginia, Gallows, Jet, Clive (Wild Arms 3) - Kneejerk. Regardless of how many targets Magus's ID can potentially hit, just #YOLOing Dark Matter works pretty well here, he needs to be priority #1 for the other team, and WA3 has some turn 1 damage issues. Even if Magus doesn't live to turn 2, the damage has been done, Flareon & Melody can mop up. Reasonably close though.
Flareon (PKMN), PC Magus (CT), Melody (WA3) vs. Zeal 2 (Chrono Trigger, unscaled) - Hexagon Mist is physical? Weird, I'd forgotten that, Magus's magic tankiness helps less than usual. And of course it's super-effective against Flareon. Also Magus is stuck spamming Dark Bomb since Dark Matter would activate the hand counters, and MP-0 is kinda problematic. Zeal isn't THAT scary but she does well enough here.
Flareon (PKMN), PC Magus (CT), Melody (WA3) vs. Luke, Natalia, Asch, Mohs (TotA)
This I'm less sure of, I think the ID blitz strategy is more important due to Natalia's healing after Magus gets zerg'd down.
Flareon (PKMN), PC Magus (CT), Melody (WA3) vs. Zio (PS4, unscaled)
No PS4, but yeah, this is more flavor since Zio's a Dark Prophet as well or the like apparently. He seems pretty likely to steamroll here.