Garbadour is a recurring villain from seasons 49 and onward of TWD. He is Donald Trump from dimension 69420. In this dimension Trump was shot with a garbage gun and become a giant blob made out of trash. He was then thrown into a portal, sending him to our dimension. He then joined to Octo 8 and later the Tender 12.
Powers-Garbadour can shoot toxic trash out of his trash tip.