three as one

Neon Genesis Evangelion song 'Three of Me, One of Someone Else' by Shiro Sagisu, referring to Ayanami Rei's three incarnations from the original anime continuation, known as 'Rei I', 'Rei II' and 'Rei III', and Rei's being a clone of Ikari Yui, while also referencing Eric Berne's transactional analysis and the PAC ego-states of Parent, Adult (self) and Child.