MechWarrior is a profession in the fictional Universe of BattleTech, a wargaming and science fiction franchise created by FASA Corporation and currently owned by WizKids. MechWarriors are individuals who pilot BattleMechs, large robotic war machines that are central to the BattleTech series.
The term has been used as the name of a number of different projects:
What's it worth? Take a look at this Mechwarrior price guide: sold listings for a value indication.