Conversation so far:
What was Marvel Comics' first iteration of Freedom Force?
Freedom Force was a government-sponsored team originally composed mainly of Mystique's version of Brotherhood of Evil Mutants.
Are there any other interesting aspects about this article on Mystique besides Freedom Force and her relationship with Magneto?
Mystique is the mother of the X-Men hero Nightcrawler and the villain Graydon Creed, and the adoptive mother of the X-Men heroine Rogue.
Who is Magneto?
Magneto is a fictional character appearing in American comic books published by Marvel Comics, commonly in association with the X-Men.

Question: Who joins with them?
Self-contained rewrite: Who joins with Mystique's Freedom Force?