The Insurrectionist is the nickname for the NOD Commander of Tiberium/Twisted Dawn. After winning the war for Kane he becomes a member of the Inner Circle and leads the Black Hand, the best subfaction within the Brotherhood

He and Kane push for the integration of most Mutants into NOD society which also bolster their military and technology

Despite being the de facto leader with Kane's leave of affairs and then disapearance he and the Black Hand don't get involved in GDI's rebellion or the NOD Civil War. To be fair most NOD Commanders think little of GDI Remnants and many stayed neutral in the civil war between Genesis and the Sons

He talks to both the GDI and NOD Commanders (Four subfactions) about ending the Tiberium Insurrection with a Peace Treaty

In the GDI Ending he allows the GDI Remnants to hold Iceland plus Hawaii in exchange for trading some of their tech and going to war against Forsaken and Globaltech. GDI gets to build a Space Colony next to Jupiter in exchange for helping NOD colonize Moon, Mars and Pluto AS WELL AS help Kane build a ship that can send him back to his people!!!

In the NOD Ending he persuades the survivors of the Phoenix Regiment to betray the last of Falcon Division. Leader of the FD joins the Inner Circle. Forsaken and Globaltech surrender. Kane builds a Space Portal connecting OUR Solar System to the Capital System of his Interstellar Species!!!