In 2010, a crazy twelve-issue series called Deadpool Corps was published by Marvel, in which the standard 616 version of Deadpool was joined by several alternate versions of himself from different universes to create a super-group who would go around the galaxy causing carnage.
The likes of Lady Deadpool and Headpool returned from previous comic books and were joined by newcomers Kidpool, a child version of Deadpool who attended Professor X’s school, Dogpool, a dog with the same regenerative healing factor as Deadpool, and the powerful Championpool. It was utter nonsense but a lot of fun, as you would expect.