Even though Ka-zar is not a mutant, Xavier allows the X-Men to travel to Antarctica and enter the Savage Land to investigate this noble savage. They end up having to save Jean and Warren from being sacrificed by the Swamp Men.
– From Uncanny X-Men #10; Marvel, 1964.
– Reprinted in Marvel Masterworks X-Men HC #1.
– Reprinted in Marvel Masterworks New Edition X-Men HC #1.
– Reprinted in Marvel Masterworks X-Men TPB #1.