Xavier's Security Enforcers

Xavier's Security Enforcers (also known as the XSE) are a superhero team/police force appearing in American comic books published by Marvel Comics. The characters are depicted as being from the fictional 2070s, a time ruled by mutant hunting/killing robots called Sentinels, who at this point in time had run amok, essentially ruling Earth in order to carry out their objective to protect humanity. The XSE is formed by Hecat'e in the fallout of the Gene War (a conflict first mentioned in X-Treme X-Men #4) and the Summers Rebellion, during which mutants and humans join forces to defeat the Sentinels.