Max made his first appearance in the Roswell pilot episode In a previous existence, Max was Zan, king of the planet Antar.After Zan's death, his people used his DNA and the DNA of human donors to create two sets of alien/human hybrids or clones of him and the rest of the Royal Four of Antar.
The love between those two characters is fundamental to the show's success." Due to the nature of their relationship and the difference between an alien boy and a human girl Max and Liz relationship is considered another modern example of forbidden lovers with many references to Romeo and Juliet through the series by both the characters and the writers/producers.
Most notable examples are when Maria De Luca called them "modern Romeo and Juliet against the world" or when Liz Parker herself used the tragedy of Romeo and Juliet into one her own tragic speech in the episode "The end of the world" from season two.
These include Isabel Evans (Vilandra, Zan's sister), Michael Guerin (Rath, Vilandra's betrothed husband and Zan's second-in command), and Tess Harding (Ava, Zan's bride).
The clones were sent to Earth to hide them from their enemies especially Kivar who killed Zan & co back on Antar. Army finds the alien pods and takes them to a base for study.
However, this power is not used again in the show, and the character does not acknowledge this ability nor does the viewer understand if it is a different power or a variation of his other existing powers.
It appears that when he heals certain people - or at least the people he's emotionally close to - they start to develop alien powers, as he healed Liz Parker and she later developed powers; it is also hinted that Kyle Valenti will develop them.Max is a young man from another planet, with secrets.He saved her life in the first episode, and they became soulmates across time and space. Beyond that, the appeal of their relationship has a great deal to do with the chemistry between Shiri Appleby and Jason Behr." "Heart and Soul of Roswell, I think that Jason (Katims) would share this opinion, has always been the relationship between Max and Liz. He saved her life and he exposes himself at the same time.Max and Isabel are found together by a couple of lawyers, the Evans, who adopt the two and make a loving and stable home for them.Michael hides when this happens and is later discovered and placed with an abusive foster father.Max appears to be shy and introverted, though this is not his true disposition.