Tonstegamon is an Amphibian Digimon based on a Ichthyostega. Out of GammaBigdramon, Tonstegamon, and Shardarmon, it is the only one that hasn't gone insane yet. Slowly all three are on a more darker trio of Digimon even with the different attributes for all three of them. Not much is known as to why they are becoming more savage as they grow, but one thing is for sure, when Tonstegamon digivolves, it will have gone insane like the other two have.
Digimon Bronze and Cobalt Versions
Tonstegamon is the Ultimate stage of Minmon and specializes in the Wind element and is a Spirit Digimon. It digivolves from Tongmon at Level 20 with 100+ Spirit, and digivolves to a yet to Gorgopsimon at Level 50 with 1000+ Dragon Exp and 1000+ Beast Exp.