Atlan

Atlans are gigantic Sentinel battle mechs, resembling a likeness of an Argenta warrior clad in green armor with a horned helmet. Atlans carry large spears, shoulder and hand cannons. This weaponry can kill lesser Titans like Hell Barges. The Atlans were possibly created as a means of anti-Titan warfare. Though typically powered by Argent Energy, the Atlans were still in service during the Argenta Civil War, which implies they can function on the Wraith power alone. Atlans have no visible cockpit hatches, which possibly means that the pilot(s) entered and exited them with the usage of teleportation. An Atlan torso is kept in the Fortress of Doom, though it is unknown if it belonged to the Slayer.