Arlo is the younger twin brother of Adrian, and while he doesn't have his brother's ability to captivate a crowd, it's hard to deny that he's got a quiet, thoughtful charm of his own. While Adrian can be a lot for some people with his goofy affectations and boisterous personality, Arlo's quiet charisma has a way of catching people off guard. He's the sensitive, sincere brother, always willing to lend an ear and have the one-on-one chats Adrian misses out on because he's too busy giving speeches and being the center of attention. Folks around the harbor like to say that Arlo's the real mastermind of the brothers, the one who figures out all their plans behind the scenes, but Arlo's always been the first to quell those rumors. He and his brother have their respective strengths, weaknesses, and perspectives, and running the Harbor requires both of them working together to complement each other.
Some people wonder if Arlo ever feels like he's in his brother's shadow, defined like so many younger brothers before him by the person he isn't rather than the person he is. But he's never seen it that way. He doesn't like the spotlight. It suits him better to talk to people on a more personal level, really getting to know them and helping them see eye-to-eye with him. He's as dedicated to the Harbor's mission as his brother, and he's looking to honor Adrianna's legacy in his own way, by really making a personal connection with the Shardbound they harbor and investing in them as individuals. That's his way of fighting for the future he wants to live in.