James' older brother John was a member of the X-Men but died on one of their earlier missions. Though he originally blamed Xavier for his brother's death he ultimately realized they were not responsible and accepted Cable's offer to join X-Force. After the events of M-Day, James relocated to the "198" mutant encampment on the grounds of the Xavier mansion, and has since reconnected with Professor Xavier. Along with four other X-Men, Proudstar, once again using the Warpath alias, joined him on his quest to stop Vulcan from destroying the Shi'ar.