Humongasaurus

You can't see me!

_{This character has no official visual representation in any Transformers product or media... yet, at least.}

Humongasaurus is a Dinobot from the Rescue Bots Academy portion of the Aligned continuity family.

Humongasaurus is Grimlock's great uncle.

Fiction

Rescue Bots Academy cartoon

When Grimlock referred to himself as small, Hoist registered surprise, at which point Grimlock said he should see great uncle Humongasaurus. Mission Dinobot