>>45785785Mono-type is useful for building characters off of even if they branch out into different types/pokemon cus it helps you establish what they're all about.
Here's four of my PokeOCs and their theoretical "best" teams - Jonno being a bug gym leader has strong buges with weird strats (mainly my own WeakArmor WeaknessPolicy Crustle with Scizor and/or Golisopod to proc it). Lulu has her dark types cus she feels they're misunderstood and uses fast n tricky stuff with her Prankster mons or goes full blown offense cus she's bold and brash. Anuro is a fishman who loves to fight so lots of aquatic, stronk beasts.
Reggie (who I don't have a design for yet) is a DJ from Hoenn who spreads positive vibes and shit through music but is a secret rock nerd who likes researching minerals and mineral Pokemon with a particular fascination with the Regis. His full power team (bar Magnezone) is essentially the lite version of all the Regis