I have set my Hero to be a Dragonguard. I have over 50 victories with him therefore the perk “Dragon Friend: The Hero counts as a Dragon for Team Bonuses” should be active. I put my Hero in a team with Dragonian Monk, Dragon Soul and Asha; 3 other dragons. However, the Dragon Captain perk reads: “All troops gain… for having 3 unique Dragon troops.” The King of Dragons perk works just fine however; it recognises I have 4 unique troops from Dragon`s Claw.
Set your hero’s class to be a Dragonguard, get at least 50 victories with him, create a team with your Hero and 3 other dragons from Dragon’s Claw, and click on your Hero (or any other team member) and observe what the perks say.