I was wondering if it was necessary to create the super strong monsters listed in the infusion guide to plat this? I was probably going to just get com Lightning and wasn't sure if I had to go out and farm/level a bunch of extra things to beat post-game content minus DLC fights. --- ASAGI! ASAGI! ASAGI! Not changing this until Asagi gets her own game. Pokemon FC: 0132.7956.2296
For plat you don't need it. I've plat the game without following any infusion guide. Super infusion monster is needed for fight some dlc battle easily (gilgamesh, valfodr). But you can complete them 5star with normal infusion (it's just more difficult).
The only monster infusion I did was to create a good racing chocobo. None of the non-DLC battles are difficult enough to require infusion to beat. --- "Oh, I never leave home without my party cannon!" -Pinkie Pie