L.I.A.M. or LIAM(for the sake of my sanity) is the first ever creation of Nick Henderson, the creator of SAP. I'll be referring to Nick as "The creator" or "The Doctor"
LIAM originally was a prototype and was a "failed" experiment. The creator didn't know yet how to make artificial intelligences as intelligent as him, but LIAM wasn't completely useless.
LIAM helped The creator with minor tasks but also with big ones, such as programming "The Project", and other big stuff on "The Project".
Once SAP was created, LIAM was far inferior. At the time SAP was a Jarvis like AI, and he mainly was created to help him on "The Project".
Infact The creator only made them to help him for "The Project"...
The Project was a portal, a doorway, magnetic fields and stuff like that.
But he died before he could ever activate it...
Now but LIAM was special, he was a Learning AI, and after years and years, he became even more intelligent then his creator.
LIAM was shortly deactivated after SAP was regenerated.
So LIAM is SAP's "older brother".
