I want to use Shift Gear on it but idk if I should use a Timid or an Adamant nature. I also don’t know if it would be better as a special attacker. Can someone please help? This is for doubles so no special Pokémon.
Adamant would be the best option. Klinkklang's highest stat is his attack, which would stack up with shift gear and adamant. Timid and jolly are also good natures, however they can only stack up with automatize, and Sp. Atk is already decent on its own, so no need to lower it.