I don't know what Stan Lee and Jack Kirby were thinking putting the Stranger into this comic - I would think that the Stranger would be too powerful, and he is, but we have a fun story anyway.
Who exactly is the Stranger anyway? Let's consult my revered copy of volume one of the Official Handbook of the Marvel Universe:
The Stranger is a composite being composed of the population of the planet Gigantus. He possesses the power, strength and intelligence of an entire world. This is manifested by his control of the most powerful energy in the Marvel Universe: Cosmic energy.
Using the Power Cosmic, the Stranger can fire massive force blasts; can change matter on a molecular level; can increase his size and mass to an unknown limit; can decrease the size and mass of other objects or beings; he can teleport matter through space at high speeds; he can create powerful force fields; he can increase his own physical capabilities; he can levitate; and he has extensive psionic capabilities.
This pretty much puts him in another league when compared to the heroes and villains of a typical X-Men comic.
But, of course, Magneto doesn't think so. The Master of Magnetism begins pushing the Stranger around. That's right, Magneto begins baiting a guy with cosmic powers, at which point we get this:
The Stranger pretty much does what he will in this issue and effectively throws a wrench on the usual X-Men and Brotherhood of Evil mutants fracas.
In later stories, the Stranger will be garbed differently and he will be presented along the lines of an Elder of the Universe. The way Jack Kirby draws him here, he sorts of looks like Einstein. Stan Lee gives him an amiable, very likeable personality. So you might want to check that out.
Also here, a bit of a Marvel history footnote, we have the Scarlet Witch and Quicksilver quitting the Brotherhood of Evil Mutants - the start of their road to becoming Avengers.
Posted by Pete Albano - December 5, 2011
Did you like this post?X-Men, Vol. 1 (Marvel Masterworks)
Marvel Masterworks New Edition X-Men HC (1998-2002)
Marvel Masterworks X-Men HC (2002)
Marvel Masterworks X-Men TPB (2009)
Essential Classic X-Men TPB (2010 2nd Edition)
X-Men (1963) comic books
If you're not familiar with Marvel Masterworks, this is what it's like :
Other Classic X-MEN Stories
1 : Classic X-Men introduced; Magneto