Robbie

The details of his recruitment by Mister Sinister to the group of assassins known as the Marauders are unknown. Prism first appeared as part of a "search and destroy" mini-team of Marauders, consisting of himself, Arclight, and Scrambler. Their mission: eliminate the members of X-Factor, who were leading an evacuation mission to help Morlocks escape the Marauders. After using his powers to reflect Cyclops's optic blast back at him, X-Factor member Jean Grey used her telekinetic powers to slam Prism against a nearby wall. Much to everyone's surprise, the move killed Prism as his body was ultimately too fragile to survive being slammed against the wall.

Following the foundation of a mutant state in Krakoa by the hand of Charles Xavier and his allies, Prism resurfaced as a citizen of the nation, having been presumably reborn by the hand of The Five, a group of mutants capable of combining their powers into a process of resurrection, brought together by Xavier as part of his plans for mutant ascension. He was later seen with his arms around Mister Sinister in the Green Lagoon.

A Prism from Mister Sinister's clone farm beneath the Essex Home for Foundlings was later held captive by the Goblin Queen. At Scalphunter's request, the Hellions were sent to investigate and possibly recruit the legacy Marauders. However, the Goblin Queen used Scalphunter's former teammates against the group, transforming them into zombie-like creatures. Prism attacked Havok, but the Goblin Queen shattered the clone as he stood in her way.

Later, the High Council of Krakoa decided to resurrect all of the legacy Marauders, including Prism, but without their genetic enhancements from Mister Sinister. This presumably occurred before Prism was seen earlier on Krakoa.