Kataphrakt
Kataphrakts were the humanoid combat machines used by Earth and the Vers Empire. Martian Kataphrakts drew on Aldnoah technology, and each carried a distinct ability, so Earth forces had to answer them with tactics rather than raw firepower.
Terran Kataphrakts were conventional military machines deployed by the United Earth Federation. Martian Kataphrakts, operated by the Vers Empire and its Orbital Knights, each possessed a distinct Aldnoah Drive ability—from impenetrable shields to gravity manipulation—so that every encounter became a tactical puzzle.