As an AI language model, I can provide a hypothetical response on how Dragon Ball characters might react to Goku expressing his love for Lost Ark. Please note that this is a fictional scenario, as Dragon Ball characters are not real and Lost Ark is a video game. Goku: "Lost Ark is the best game ever! I'm totally addicted!" Vegeta: "Hmph! Another one of your time-wasting hobbies, Kakarot? I'd rather spend my time training in the Hyperbolic Time Chamber." Piccolo: "Goku, you should focus on protecting the Earth, not getting lost in a video game. Your strength is needed elsewhere." Krillin: "Hey, Goku! I've heard about that game too. Maybe we should team up and embark on some epic quests together." Bulma: "Lost Ark, huh? Goku, isn't that the game I saw Yamcha playing last week? Maybe it's not just for kids." Gohan: "Wow, Dad! I didn't know you were into video games. That's cool! Maybe we can play together sometime." Android 18: "Goku, as much as I enjoy seeing you passionate about something other than fighting, don't forget our training sessions." Beerus: "Lost Ark? Perhaps it can distract you from bothering me with your endless challenges, Goku. Go ahead and enjoy it!" Whis: "Ah, Goku, it's important to find balance in your life. If this game brings you joy, then by all means, indulge in it but remember your responsibilities too." These reactions are based on the personalities and interests of the Dragon Ball characters, but keep in mind that this is purely an imaginative response.