Eldritch J is a manifestation of the AbsoluteSolver that manifested following the destruction of Serial Designation J, after she was incinerated by Uzi's railgun to the point where her regeneration system couldn't restore her without the Solver's assistance. It serves as the main antagonist of Heartbeat and despite its short-lived threat, it serves as the catalyst that causes Uzi to become aware of there being a "greater threat" than the Disassembly Drones and even the company itself, which driv