first 11 minicomics that were produced (1982-83) were made
by DC Comics, who later produced a 5-issue comic series. All
other minicomics, from 1984 and on, were produced solely by
Mattel (and, quite frankly, somewhat lacked the quality of
the first ones). However, Mattel did have their moments, especially
towards the end, with issues such as "The Ultimate Battleground!"
and "The Powers of Grayskull: The Legend Begins!"
It might be noted that some of the giants of the industry
were involved in these. The DC minicomics were drawn by Mark
Texiera, who has gone on to draw such books as "Ghost
Rider," "Sabretooth," and other assorted things.
"Snake Attack," "Grizzlor: The Legend Comes
Alive," "King of the Snake Men," "The
Search for Keldor," and "The Ultimate Battleground"
were drawn by Bruce Timm. If you don't know the name, he's
one of the main people responsible for the now-concluded New
Batman/Superman Adventures show on the WB network.