Version 1.8 and onwards require the Mega Showdown mod as well as the v0.16 version of the Radical Cobblemon Trainers mod.

This is a very simple datapack that adds more Trainers to the Radical Cobblemon Trainers mod. This includes the following series:

Standalone Series (No Prerequisites)

These series can be started immediately without completing any other series:

Title: Pokémon Adventures
Description: Meet the heroes from the Pokémon Adventures manga! Can you beat them all?
Difficulty: 5/10
Defeat Yellow to unlock Crystal, Ruby and Diamond. Beating each one of these three will unlock the other two members from their trio respectively:
Crystal > Gold > Silver
Ruby > Sapphire > Emerald
Diamond > Pearl > Platinum
Defeat Silver, Emerald and Platinum to unlock Blue, Green and Red!
Black, White, Blake and Whitley are optional battles in v1.7 as well!

Title: Sinnoh Gym Challenge
Description: Gym Leaders from the Sinnoh region are here to test your skills. Are you up to the challenge? All Sinnoh Gym Challenge battles are Double Battles.
Difficulty: 4/10

Title: Unova Gym Challenge
Description: Gym Leaders from the Unova region are here to test your skills. Are you up to the challenge?
Difficulty: 5/10

Title: Hoenn Gym Challenge
Description: Gym Leaders from the Hoenn region are here to test your skills. Are you up to the challenge?
Difficulty: 3/10

Title: Kalos Gym Challenge
Description: Gym Leaders from the Kalos region are here to test your skills. Are you up to the challenge?
(The Kalos Gym Challenge trainers have team levels upwards of 90, and use Mega Evolved Pokemon.)
Difficulty: 6/10

Series with Prerequisites:

These series require completion of other series before they can be accessed:

Title: Unova League Challenge
Description: Battle the Elite Four and Champion from the Unova Region! Are you ready?
Difficulty: 5/10
Requires: Unova Gym Challenge

Title: Kalos League Challenge
Description: Face the Elite Four and Champion from the Kalos Region! Are you ready?
Difficulty: 6/10
Requires: Kalos Gym Challenge

Title: Team Plasma's Seven Sages
Description: Hunt down the Seven Sages of Team Plasma to put an end to their crimes for good!
Difficulty: 6/10
Requires: Both Unova League Challenge AND Team Plasma

Title: Paldea Elite Four
Description: Take on the Elite Four of Paldea in the Paldea Elite Four challenge!
Difficulty: 4/10
Requires: Paldea Gym Challenge

The difficulty is medium to hard, with all of the Pokemon having max EVs and IVs and some competitive movesets.

This is my first datapack, so any help is welcomed.

Credits to @hdainester for the amazing Radical Cobblemon Trainers mod!

Hope you enjoy!