Loki is 100% a bait and switch. If he was the main villain, Oda would’ve kept it a mystery for a bit longer. Either Loki got framed for killing the king, or the king was secretly evil
He's a double bait and switch
Loki is gonna be real friendly with goofy rn. goofy might even free him because of his "intuition for sensing a person's true nature" or whatever.
But Loki's namesake is literally THE most famous trickster god. So Loki betrays goofy mid way through the arc or even at the end.