Ever occur to you that you can become the Theos of somebody’s Odyssey? I like to park myself between Dawn Island and Redwake, but not directly blocking it. Any new player would of course get curious and check out your ship, and any experienced player would wander on past, it’s perfect.
At this point, put on the desired facade of your character, and enthuse them with the personality. Either be reserved, demanding, or cunning, the choice is yours. Don’t directly guide them through though, act as more of a mentor that they can call upon when desired, and when you know a boss is coming up, think of a reason to stay behind. If they ask for help, just teach them the things that you learned about the boss fight.
If they entertain you enough, give them something to remember you by, perhaps a weapon with your name and desired skillset on it, or something like a valuable boss drop. Maybe even a piece of your armor set that you can permanently remove because you gave it to them, but that’s a bit of a commitment.
Make sure you show off your intense capabilities in every opportunity. Either using a cool shape for your magic as a mage, having incredible size, or just using a neat potion if you’re lazy.
Maybe you’re not the type to want to be a mentor though, there’s other options. The typical idea for acting as a hostile NPC is jumping people in Caitara with a dialogue line, but if you wanna be classy, take the Sea Monster approach.
To be a Sea Monster, you first must come up with a character. You may have an existing file that fits the bill, but if not, I’d recommend Magma or Ice magic for platforms, Wind magic for knockback, Cannon Fist for ship destruction, or Abyss water for symmetry with the sea’s color. Bonus points if you use a rowboat while on the job.
Tide potions are a blessing from the lord in this one, and if you can get it to make whirlpools, use gale potions too. Being able to throw an entire wave at your opponent is huge for this method.
Now, pick a spot to terrorize people from. I’d recommend high traffic areas. Make it clear that you’re not just being a jackwad by starting off with a dialogue line, or using a tide potion to scare them.
You can also take a simpler approach by instigating transactions with players as a merchant, do note that they need 3 hours of gameplay before you can trade with them.
Yeah, it’s pretty nice to act up a role as a character.