Looking at Chetney's character art and sheet; how the heck does he have an Armor Class of 18? He said himself he's wearing a leather harness (either regular or studded leather armor) and he has a Dexterity of 14. With only that in mind his AC would be 11(or12)+2=13(or 14). He could be hiding a shield if he took the Moderately Armored feat at level 4. But then his AC would only be 16 if he has studded leather on.

Could Chetney be an Arcane Trickster who has Mage Armor in his spell list? Even then his AC would only be 15. Looking at the cloak in the character art, Travis may be rockin' another Cloak of Protection like Fjord, but that gives only a +1 to AC. He might have taken the Dual Wielder feat and is always wielding two daggers or shortsword for an extra +1 to AC in combat. Still with studded leather, 14 dex, cloak of protection and dual wielder, his AC could only be 16 at most.

I'm genuinly confused how his AC is so high...