ROCKSLIDE

Santo was identified in New Mutants (2nd series) #8, and given a last name and codename in #10.

Rockslide was killed in X of Swords: Creation #1 by Summoner in Otherworld. Because of the location of his death, Rockslide's resurrection in X-Factor (4th series) #4 went awry, producing a new entity with an ambiguous level of connection to the previous Rockslide, formed from the omniversal understanding of Rockslide's parallels through the multiverse. He was nicknamed "Wrongslide" by the mutants of Krakoa, as mentioned in X-Men: Red (2nd series) #4. Although Krakoan back-ups were corrupted by Otherworld deaths, it appeared this was corrected for once Wanda created the Waiting Room outside of time and space in X-Men: Trial of Magneto #5. When Wrongslide sacrificed himself to feed Krakoa in Fall of the House of X #4, he expected Rockslide would rise in his place. Indeed, a resurrected Rockslide was seen in X-Men Forever (3rd series) #4.