Crimson A1

Rather than an Evangelion in the usual sense, Crimson A1 reads as a gigantic woman ornamented with Eva-style details across her body. Her armor is uniformly red, a puzzle given that Asuka's unit wore silver Allegorica plating at the moment of fusion. The Allegorica flight gear has been absorbed into her anatomy, trailing from her head in place of hair and letting her take flight whenever she pleases, while an Entry Plug remains lodged in her body despite serving no practical purpose anymore. Her later incarnation, Torwartα1, keeps the same figure but trades the palette for black and a far deeper red, adding a back-mounted plate resembling those carried by the two Torwart units.

The synthesis wrecked her mind. Crimson A1 carries roughly the mentality of an infant, toying with tanks as if they were playthings and grasping almost nothing about the world around her.

During the battle against Armaros on the Moon, unknown ancient organisms infect Asuka while she pilots Evangelion Unit-02 Type II Allegorica, and pilot and machine dissolve into a single Human-Evangelion Synthesis. NERV Japan tags the resulting entity Crimson A1, a designation that upsets Hikari Horaki. Explaining the situation to Toji, Hikari insists the creature is not simply Asuka: contact with the Ark left her scrambled together with all manner of other creatures. She believes the soul of Asuka's mother tried to shield her daughter by overwriting portions of the Allegorica unit with pieces of Asuka herself, which means the girl still survives inside the composite. For that reason Hikari asks everyone to address the being as Asuka, so her essence does not fade into the merged body. The attempt to call her back to humanity fails, and the entity is pulled away into another dimension. She eventually returns as an enemy under the name Torwartα1.