I actually really liked the US Headmasters concept: two beings, from completely different backgrounds, forced to work together, combined as a single entity, in order to gain the upper hand in a war. It's this 'melding of minds' concept that intrigues me the most, and gave rise to a whole host of dramatic storytelling opportunities. In the Marvel comics, the addition of Zarak to Scorponok's psyche slowly mellowed the character, so that by the end of the run, Scorponok/Zarak died a hero. In the 'Headmasters' comics, we saw the impact of the bond on the two mistmatched minds. The usually-lethal Scorponok refused to kill Zarak's daughter in an uncharacteristic act of kindness. Zarak was nearly driven insane with Scorponok's evil thoughts. Then we had the comics' take on the Spike/Fort Max bonding: Spike wanted no part of the Autobots, but was plagued by strange dreams and visions until he made peace with himself and re-formed with Fort Max. Then there was 'Worlds Apart', where we got an insight into how the mismatched Gort and Highbrow worked well together because of the one thing they had in common - righteousness and justice. All the way through, I thought the whole concept was really interesting, opened the door for some dramatic moments and conflicts, and gave comic writers Bob Budiansky and Simon Furman the scope to have fun and develop these interesting characters. It's quite telling that, in both the comics and cartoons, the Headmasters got so much more development than the Targetmasters, simply because the entire concept was a writer's dream.