MSHS meaning in General ?

Marvel Super Hero Squad is an action figure line marketed by Hasbro beginning in 2006. The line features 2-inch (51 mm) scale replicas of comic book heroes from the Marvel Comics universe. Each figure is portrayed in a cartoonish super-deformed style. The line was designed for younger collectors, but has become a hit with fans of all ages despite the "for ages 3 and up" category status. Marketed initially as four two-packs per wave, Super Hero Squad has branched out to include larger multi-packs, vehicles, and mega-packs containing larger characters in scale with the 2-inch (51 mm) line.

An animated series, The Super Hero Squad Show, based on the toy line premiered in the United States on Cartoon Network in September 2009. On 2013, Hasbro released the exclusive figures of Iron Man 3 boxsets. After these, there would be no more toys based on the later MCU movies.