Mantid commands the Insectors/Invectids as their primary antagonist, spearheading a relentless war against humanity within the Inner World. His singular focus lies in seizing the four Oracle Keys—artifacts wielding catastrophic power to reshape or annihilate existence. A ruthless strategist, he masquerades as the Insectors’ devoted leader while coldly plotting their disposal once they outlive their usefulness.

Mantid’s arsenal blends psychological warfare and cutting-edge technology to dominate pivotal figures. He corrupts Aqune, a Spider Rider, by fusing her mask with the "Ultimate Machine-Sector," weaponizing her to siphon energy from the Oracle Keys—a betrayal underscoring his readiness to sacrifice allies for ambition. His schemes extend to deploying brainwashing flora and launching devastating assaults on human strongholds like the Kingdom of Nuuma, eroding opposition through calculated terror.

Though methodical, Mantid’s hubris seeds his downfall. Overreliance on Aqune as a pawn backfires when her bonds with others fracture his designs. His rule epitomizes tyrannical authority, mirroring the Insectors’ own hierarchical oppression, where lower castes are mere fodder for his ascent.

Shrouded in mystery, Mantid’s origins and motives remain anchored solely to domination. He navigates conflicts with icy pragmatism, treating humans and Insectors alike as hurdles to obliterate. His reign culminates in a climactic clash where internal dissent and the Spider Riders’ tenacity unravel his machinations, though the precise fallout of this reckoning remains unrecorded.