Quinn is a wanderer, a loner more used to traversing the wasteland than sitting around and chatting in this place, but he's here to provide trade and supplies to Tulip, and make sure she's okay. Used to interaction with humans, he has learned not to trust them, but he's a good judge of character. Don't think he's a pushover; he's a highly skilled combat veteran of countless raids across the wasteland.
"Oh, here and there and everywhere. I've explored all up and down the coast, from the Commonwealth, to the Pitt, all the way down to Crater Banks. I also do a fair bit of trading. You see, folks here, they don't have much of a connection to the outside. So I move their goods and caps out to the Wastes and bring back in what I trade for 'em."