During the events of Octopath Traveler Mikk, Makk and their crew raid Rippletide and steal from various merchants there, including taking a wine bottle from Tressa. Tressa tries to stand up to them, but another Pirate Captain talks her out of it. However, Tressa insists on chasing them and as a result, the Captain lets Tressa buy goods from his crew. The key item Tressa purchases is Sleepweed, which she places in a keg of wine which she delivers to the pirates as an "apology" for being so hostile.
After Tressa gives the wine to the pirate crew, everyone, including Mikk and Makk fall asleep, allowing Tressa to safely go into the Caves of Maiya and reclaim the stolen goods. However, just as she's taking them, Mikk and Makk wake up and engage in battle with her.
After Tressa emerges victorious, Mikk and Makk do not back down but instead send their entire crew to attack Tressa. However, as they're doing so, the Pirate Captain from earlier intercepts them and saves Tressa. After a short conversation, the Captain reveals himself to be the true captain of Mikk and Makk's crew, Captain Leon Bastralle.
Mikk and Makk are later seen in Victor's Hollow, where they reveal to Tressa and her companions that they work for Leon Bastralle now.
Mikk is a tall pirate wearing a bandanna. He wears black boots and brown trousers. He holds a large cutlass in his left hand.
Makk is shorter than Mikk. Like Mikk, he wears a bandanna and holds a cutlass in his left hand. Unlike Mikk, Makk's cutlass is a lot smaller and Makk wears a white shirt, blue trousers and brown boots.