Underbite is apparently a huge Decepticon from the Robots in Disguise (2015) portion of the Aligned continuity family. Underbite has a beast mode (Gorgonopsia) and a vehicle mode (Cybertronian truck).
Robots In Disguise (2015) animation
I want to tell you about the Transformers!
This character article is a stub and is missing information on their fictional appearances. You can help Teletraan I: The Transformers Wiki by expanding it.
Further information in this article is coming soon as it pertains to information that is not currently appropriate for inclusion.
See the relevant policy page for the reasons why, and do not add further information pending review.