Hobobot

Hobobots are homeless robots from Shattered Glass Animated continuity family.

You can't see me!

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

Hobobots are essentially robotic hobos.

Fiction

Sari Sumdac "convinced" a bunch of local hobobots to help her free the Autobots from Soundwave VR world. They beat up HYBRID, then got chased off. The AllSpark Almanac Addendum