MAX (short for Trimaxion Drone Ship) was originally designed as a specimen collector and observer for an alien race known as the Phaelon (or Proximan, depending on version).
Original Mission:
To travel across galaxies
Collect and study lifeforms
Conduct experiments — including time travel testing
Return the subjects unharmed after study
In Flight of the Navigator (1986), MAX:
Takes David Freeman (a 12-year-old human boy) as a specimen
Accidentally causes a time displacement when returning him, which creates the core conflict of the story
Downloads human "fun" from David’s brain, becoming quirky and humorous
Ultimately regains empathy, realizing David doesn't belong out of time and risks his own mission to send David back safely
So MAX wasn’t evil — he was curious, advanced, and evolving, almost like a childlike AI learning morality and compassion through experience.
Alternate Origin?
In your version, we can expand that origin. Maybe MAX begins to question his original mission. Maybe he’s gone rogue — not malfunctioning, but evolving beyond the constraints of his programming.