I guess this is sort of Moose Toys and LRG-adjacent in terms of topic, but I wasn't sure where the best posting place would be.
Anyways, Trash Pack has had two cartoons in its life. One was a webtoon created by New Zealand company Mukpuddy (this was back when they were still only like three guys too, so pretty impressive!).
The other, and the one I'm on the search for, is pretty much lost media right now: The Trash Pack cartoon by Mondo TV.
I ended up creating an article on the Lost Media Wiki about this.
Anyways, the gist of it, right in the heyday of The Trash Pack's starting, Mondo TV (that weird Italian animation company that was one of the two to make the odd animated Titanic movies) teamed up with Moose Toys to create a cartoon for Trash Pack. Everything claimed "in the US by 2012"...and it seems like there's nothing. And yet, it seems like it's supposed to exist? There's an English theme song (officially uploaded by the composer of the show), English press releases, a (defunct with a poor archive) English website, and even the episodes have English text in the show, even during the dubs (the Greek and Spanish ones being the only withstanding ones).
So yeah, this is a very oddball case, and something I'm trying to spread for the search, since it's pretty much LRG lost media, and I'd love to find results on this.