This support unit is meant to combined with an Evangelion unit through the three-point plug used for the Umbilical Cable. It enables the full energetic autonomy of the Eva unit via the internal N² Reactor of the Allegorica unit as well as both atmospheric and sub-orbital space flight capabilities. Two Evangelions are seen equipped with the Allegorica unit: Evangelion Unit-02 Type II and Evangelion Unit-00 Type-F.