Risa

I interpret her interactions with Picard a little differently. He might think she's a real pain in the ass, but I don't think she's actually being a sex pest, because they both know she knows there's nothing there. He's not going to be pressured into doing anything he's not interested in, which is something she also knows, and they live in a world where that's not OK anyway. It's a game, and honestly, an extremely gifted and perceptive telepath could cause him any number of problems. This is a man whose experience with people being in his mind was from the Borg. She's certainly found a way to come off as extremely harmless.