Humungousaur is the 36th and the last Nano before Fusionfall's 2nd Anniversary releasing the new nanos and missions and locations such as the Null Void and Basic Training Pt2.
He is received by defeating Fusion Tetrax instead of Fusion Ben.
He is a Cosmix.
Ironically, he is Ben's biggest alien in the original Alien Force series and he is a Nano which from its name is small.
One of Humungousaur's abilities involved him "going wild", this could be a reference to Humungousaur's tantrum in Map of Infinity when he was angered that wasn't able to save the AndromedaAliens from Aggregor then angrily beat him up.