They would be SOOOOOOOOOOOOOO easy to 'shoehorn' in....

Bravestarr is tied to Rio... that's easy, different planets, different sherrifs... Maybe even tie them both into the Galactic Guardians... Any kind of planetary police system works... Whatever story they have for Rio... works for Bravestarr too.

(though admitedly I'm NOT a fan of Bravestarr and don't mourn his exclusion)

Blackstarr is even EASIER...

His story is BASICALLY MOTU ANYWAY....

Earthman astronaut gets lost in worm hole, ends up on strange planet. Gains half of a magic sword with awesome powers... Needs to keep the other half from Evil bad guy....

As far as I'm concerned, He's an earlier He-man and whatshisname's an early skeletor... or even a mortal form of Scareglow...

The sword of He is known to change colors and forms from time to time... (He-ro through New Adventures...)

During that time frame it looked like the Power Star, or whatever it was called...

I don't want a whole LINE of these characters... and really I don't think a line could possibly be supported... but I would LOVE a 2 pack good/bad guy integrated into the line...

or even just Blackstar and his Dragon mount...

who DOESN"T love a Dragon mount!!!!!! ^_^

But seriously, between Marlena's earth connection and 5000 years of He-men... there's no need to wrack the brain much to work THESE guys in...