As leader of the Great Lakes Avengers, Mister Immortal has fought Terminus, Deadpool, the Thunderbolts, Graviton, Maelstrom, Deathurge, Batroc and Batroc’s Brigade. Recently after learning that all of their current members (except Tippy Toe) were mutants (though Mr. Immortal has been referred to as being "homo supreme" rather than "homo superior") and receiving threats of a lawsuit from the Maria Stark foundation for using the name of the Avengers the Great Lakes Avengers changed their name to the Great Lakes X-Men to avoid a lawsuit. Recently, the team attended a poker tournament held by Thing were Flatman won and earned the right to call the team the "Great Lakes Champions", before the Civil War.