Mutant X (1998) #21
In one of the most shocking revelations of the Mutant X Universe, Havok learns the secrets of this world's most powerful mutants: Professor X... and Apocalypse!
Published: 7/1/2000
- Chris Eliopoulos, letterer
- Tom Lyle, penciler
- Bart Sears, penciler
- Howard Mackie, writer
- Andrew Pepoy, inker
- Gina Going Raney, colorist