After deducing that symbiotes leave trace remnants of their constituent matter in former hosts, the Maker began working on a machine to extract these codices - being interested in seeing what would happen if enough of them were combined. Contacted by Venom and already aware that Carnage was hunting former symbiote hosts, the Maker disassembled his machine and relocated it to Rex Strickland's Warehouse, lying that it would destroy the extracted codices. Not having been able to test it without a symbiote host, he expressed the desire to use it on Normie Osborn but was refused by Venom and Spider-Man; suggesting they retrieve Norman Osborn instead.
While waiting for Venom and Spider-Man to return, the Maker completed his machine - dubbed the "Symbiote Codex Isolation and Thermo-Heated Extraction" by Dylan Brock -- and attempted to test it on Normie anyway, but was stopped by Dylan and the arrival of the Riot, Agony, Phage, and Lasher symbiotes - which had joined Carnage's cause and taken over a family of four. The Maker managed to subdue them using the warehouse's arsenal of anti-symbiote weaponry and also captured Sleeper, stripping it from the corpse of Tel-Kar. The Maker loaded the family and Tel-Kar's corpse into the machine and activated it, causing the former excruciating pain.
After the Maker was taken over by the Hybrid symbiote and chased away by Spider-Man, Wolverine, Captain America, and the Thing; Bruce Banner made the finishing adjustments to the machine and used it to extract Normie's codex and those of the assembled heroes save for Spider-Man. Carnage infiltrated the warehouse disguised as Eddie Brock and attacked the assembled heroes, directing his horde of Carnage Doppelgängers to destroy the S.C.I.T.H.E. while he fought the Venomized Hulk. After Carnage absorbed the Venom symbiote, Eddie Brock punched through the storage tank containing the codices and amalgamated them into a gestalt symbiote.
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