Crystar is pretty bittersweet for me as it’s possibly the last action figure I ever purchased as a kid, I was in the last few weeks of being 12 and the winds of change were blowing. I still think they were neat.
AKA Brian Heiler author of "Rack Toys: Cheap, Crazed Playthings" and co-editor of "Toy-Ventures Magazine". Co-Host of the "Pod Stallions" podcast. Host of the Brick Mantooth Youtube channel, painter, designer, writer, mental health advocate, toy collector, Mego, and Mego Knock-Off enthusiast. I have large feet, ADHD and I live in Canada. Talk toys, not others. 
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The art for the Marvel promo page is weird. Looks like it was done by two different artists. He-Man Crystar, his buddy Eye-Patch and the castle have a very "Marvel Super Special" look.
But the Spooky Blind Wizard, the Lava Dragons and that smokin' hot blonde in her mid-30s were clearly done by someone else, someone who was doiing a very good job trying to be Boris Vallejo or maybe even the man himself.
Checking the catalog page, the blonde wasn't listed. Neither was Crystal Castle GraySkull, but that's obviously a play-set waiting to happen.
For anyone who might care, the Marvel promo page re-used the cover of the Crystar comic #1, which butchered a gorgeous piece of promotional art
http://cdn1us.denofgeek.com/sites/denofgeekus/files/styles/article_width/public/2015/12/comic-toys-crystar.jpg
I always thought that Krystar was really cool and underrated. The line probably needed better marketing or more figures or something.
I really wouldn't mind seeing Matty Collector do a "He-Man" re-interpretation of the Krystar line.
Animated series in development? What happened to that?
The blonde looks bored out of her mind by Crystar. His ex maybe?