Rex's Training Guide

Level 1- 10 ( location walking from henesys town to blue mushroom forest)

Ribbon Pig
Level 11- 20
Blue Mushroom
Level 21-30( Location walking from ludibrium town to the path of time<4>)
Brown Teddy

Level 31-40
Tick-Tock

Level 41-50
chronos
Master chromos

Level 51-60(location; forest of golem)
Golem, dark golem, mixed golem.

Level 61-75 (location: walking from El Nath to Ice Valley II)
Hector
White Fang
Yeti
Yeti & Pepe

Level 75-80 (MesoGears:Wolf Spider Cavern)
Wolf Spider

Level 81-90 (Walking from Path of Time to Twisted Time)
Buffoon
Ghost Pirate
Spirit Viking
Gigantic Spirit Viking

Level 91-110 (Walking from Aqua Road to The Grave of a wrecked Ship)
Bone Fish
Shark
Cold Shark
Squid
Risell Squid

Level 101-120 (FM 14)
Jr.Balrog

Level 121-140(Travel by Mount, from Leafre town,East Forest to Entrance to Dragon Forest)
Dual Beetle, Beetle
Haf, Blood Haf,
Birk, Dual Birk,
Black Kentaurus, Blue Kentaurus, Red Kentaurus

Level 141-170(Travel by Mount, Entrance to Dragon Forest to Nest of a Dead Dragon)
Blue Dragon Turtle, Red Dragon Turtle, Blue Dragon Turtle,
Dark Cornian, Green Cornian,
Brexton
Blue Wyvern, Red Wyvern, Dark Wyvern
Skelosaurus, Skelegon

INCOMPLETE YET!~~
Some extra tips:
Dark sight From Night Lord and Genesis From Bishop work best together. XD!~~