https://e621.net/posts/2800380?q=happyroadkill
So I did find this artist and went to the source to find Gravityballs and Happyroadkill are 2 separate Twitter accounts. They do use the same characters and seem to have similar artwork. So are they the same person?

What I find funny is finding out Vaush and Shoe∅nhead follows Happyroadkill. Like of course they would but I wouldn't take Shoe as a follower of furry content but definitely would follow liberal content as yeah both do follow political based pages.

Yes, they're the same person. gravityballs aliases to happyroadkill.