Samantha Robertson/New World

Samantha Robertson (also known as Samantha Johnson) is a resident of Mesa City. She is a alternative version of Samantha Robertson.

Biography
In this alternative continuity to the primary City 17 Street universe, Samantha Robertson is still alive, still married to Nathan and they both have a son named Gareth. The family live in the town of New Haven, which is located nearby the ruined Black Mesa Research Facility.

When Nathan from the primary verse crosses over, he is surprised (and at the same time happy) that Samantha is still alive, although she finds his odd behaviour a mystery. When Nathan accuses Mayor Wallace Breen of being bad, Samantha is angry at his behaviour, not knowing who Breen was in the primary timeline. However Nathan's accusations are correct, as Mayor Wallace Breen has teamed up with his primary verse counterpart to build a Combine army and dominate the outer world.

Samantha kicks Nathan out of their home after being fed up with him. But unfortunately Mayor Breen sends his private guards to kidnap Gareth and when Samantha attempts to stop them she is attacked and stabbed and ends up hospitalized. While in hospital she is visited by the primary verse Breen, who gives her information on the multi-verse, and Nathan's terrible actions in the primary universe such as killing people and also kidnapping Samantha's younger sister Hannah at one point (missing out the fact he felt guilty and rescued her). This brings shock to Samantha and even though Nathan rescues Gareth and has Mayor Breen arrested, she doesn't want to be with him. Nathan accepts this and leaves New Haven, although she does tell him he can see Gareth anytime.

Two years later Samantha and Nathan are now divorced, with him living in Europe. Samantha grows depressed, especially after losing her job and she ends up moving in with her father, who unknown to her is the Elder Supreme.