Evangelion Unit-01 (初号機[?], "Shogōki") is the first non-prototype Evangelion unit, and is referred to as the "Test Type". It houses the soul of Shinji's mother, Yui Ikari. It is the only EVA to be born from Lilith. Following its going berserker and eating of Zeruel's S² Engine, it was the only Evangelion able to go without an umbilical cable until the construction of the Mass Production Evangelions.