A collection of some of my fan-made regional slang terms. Warning: Some of them may be offensive and/or contain swear words.

Kanjoh - Term often used to refer to both Kanto and Johto because they share a Pokémon league

Froakie or "Bloody Froakie" - Offensive term for a Kalosian. Often used by Galarians.

Hoennian bastard - Derogatory term, often used by Sinnohians, to refer to Hoennians. Often heard by angry Sinnohians at Pokémon contests by your more *hem hem* rabid Fantina fans.

Contest freaks - Usually refers to either Hoennians or Sinnohians due to how popular Pokémon Contests are over there. Originated from the stereotype that people from those regions are obsessed with Pokémon Contests

Mountain climber - Term used to refer to Sinnohians. The region is literally one giant mountain.

Sinjoh - Term often used to refer to someone of mixed Sinnoh-Johto decent.

Leagueless - A now mostly obsolete term used to describe Alola since it now has a Pokémon league. Many people would joke about strong trainers going to that region since there used to be nothing there.

Nerd island - Term often used to refer to Aether Paradise by Team Skull since the place is full of scientists and researchers

Un'va - Galarian term for Unovans. A parody on the accent.

Snootopolin/Hearthead - Rude term for someone from Sootopolis/Hearthome. Often directed at each other.

Ranger - Term, often derogatory, for people from Fiore and Almia (sometimes Oblivia). As many Pokémon trainers view Rangers as "lessers" due to many of their partners being weak Pika-clones or unevolved.

Middle agers: Term used for people from the Ransei region as most of the region acts like it never left that time period.