After escaping to the present era via Fitzroy's time portal, Styglut was the last of the future criminals to escape Bishop's justice. He acted as somewhat of a leader, with the other criminals following his lead.
Due to his recent membership in the X-Men, and their differing methods to the X.S.E., Bishop chose to spare his life rather than terminating him as he had the rest of the criminals from his era.
What became of Styglut after he was captured is unknown.
Similar to Fitzroy
, Styglut possessed the ability to drain a person's lifeforce, killing them. He would then convert that energy into powerful bio-blasts.