M-Tron (also written M:TRON) was a LEGO Space subtheme released in 1990 that consisted of 8 sets where the M-Tron were depictedas a rescue and repair faction in all LEGO catalogs except for the United States, where they are described as a mining faction. M-Tron was also the last space theme to carry the LEGOLAND banner and was changed to just LEGO System.
1990 LEGO Sets
In 1990, LEGO released several new sets and themes, including the LEGO Pirates theme, which introduced models of pirate ships, islands, and treasure. 1990 was also the year that LEGO introduced the LEGO Fabuland theme, which was a line of sets featuring anthropomorphic animal characters living in a fictional town. The Fabuland theme was targeted towards younger children and was popular for its cute, colorful designs.