It may be for personal business, not only the world-saving kind. Intimidating an idiot, assisting in ending a fight before it begins, that sort of thing.

[ He sees a human man (with bad hair) and another giant lizard (a female) before his mind's eye clears with Godzilla's and Loki notes the way a clawed hand touches that throat. ]

You wish for speech. [ Reasonable, although he prefers being one of only three people in the dimension who can chatter freely with the fellow. Loki nods. ] It's within my power to make that happen.