Critter Baron is a Legends of Idleon item: quest reward.

Critter Baron | Idleon Toolbox

Critter_Baron

This chrome coloured scorpion came straight from the future! Fuuuutuuuuureee! FUUTUUURREE!!! SOMEONE DIRECT ME TO THE CAN OPENERRRR!!!!

Crescent_Scorpie

Bow before the destroyer of all that lies outside his domain, the ruler of the 8th dimension and all that it's flame encompasses, the bringer of light to the blind, and darkness to those who recite his title in full. ...ah crap.

Eternal_Lord_of_The_Undying_Ember

One of the only beings strong enough to take on the Eternal Lord of the Undying Ember realm. Their battle would be legendary.

Diamond_Duck

Catch a TON of Shinies... like, a TOOOOOON.