Thri-kreen: Unfortunately, barbarians already get Unarmored Defense, which negates the baseline AC bump furnished by Chameleon Carapace. That mentioned, they do continue to get the good thing about being able to use their action to have gain on Stealth checks. When it comes into the Secondary Arms, you could wield https://dndhuman03680.alltdesign.com/a-secret-weapon-for-mercenary-veteran-5e-47674288