A world where Calvin Rankin made the choice not to take Professor X's help and training, but became the world's deadliest criminal instead.
His life was changed when he met the Exiles' Calvin and probed his mind to find out why his life was so much better. Upon realizing that he was just wallowing in self-pity, The Big 'M' reformed and created his world's version of the X-Men from his Brotherhood remnants.
- 2 appearance(s) of Earth-5423
- 16 image(s) of Earth-5423
- 11 characters that originate from Earth-5423
- 2 teams that originate from Earth-5423
- 1 organizations that originate from Earth-5423