Turtle

Overview
A tank creature boasting high HP growth (1.7) and Armor (3), but low mana, mana growth, Strength, Magic and movement. Strangely, it also has the highest magic growth stat in the game. The only way to really make use of that is to fuse it with a spirit for a low cost spell like WaterBolt, or manage to give it an ability to increase its mana. Not really worth your time and effort, unless you really want a massive, magic turtle that can cast Tsunami to condemn its enemies to a watery doom.

Moneymaking
They can be sold for 100 gold at Medium size and for 300 gold at Enormous size. Every level above 1 additionally increases their price by 5%.