Commander Anonji (also known as Hannonji, Unknown G, or Annonge) forged the Mechanical Combat Squad (Mechacon) to shield Victor Town after a global catastrophe ravaged Earth. He created this force explicitly to defend survivors rebuilding within the planned sanctuary city, designed by scientist Kyōtarō Otaki. Anonji spearheaded resistance against the invading Madokter Army, intent on seizing advanced technology and energy resources beneath the settlement. Military records show he directly commanded key units like the 18th Mechacon Regiment, deploying Captain Barry Hawk for frontline operations while coordinating defenses across Victor Town's districts.

When internal betrayal, particularly Paul's collusion with the Madokter Army, compromised security and enabled enemy occupation of critical sectors, Anonji orchestrated the evacuation of civilians and surviving Mechacon forces to Fort Santore. This tactical retreat preserved their fighting strength. At Santore, he restructured defenses, deploying personnel and resources against sustained assaults targeting the new stronghold. His command adapted to evolving threats, including the Madokter Army's relocation of its headquarters to Victor Town to exploit the subterranean energy source Ixtron.

Anonji maintained strategic oversight throughout the conflict, balancing immediate counterattacks with the long-term preservation of human knowledge and technology within the Ark-like vessel Anoh. His leadership extended beyond combat to logistics and organization, ensuring command continuity despite territorial losses. Chronicles note his direct involvement in critical decisions, such as integrating Daigo Ōtaki into Mechacon despite initial secrecy around the youth's connection to the Gordian system. While specific personal background or origins remain undocumented, his role as architect of Victor Town's defense and its successor initiatives at Santore positions him as a pivotal figure in humanity's struggle.