In New Horizons, if the game can't load an NPC due to their referenced model name being invalid, or for other reasons, the game will instead load a naked, unnamed Bob in their place as a failsafe. This was likely a dummy NPC used for testing reasons.
They are so very married in this scene. Nix's social fallback with anyone is just talking about his husband Dick and he can't help but make comments about how Dick needs to relax. Then when Dick gets all huffy about the pass (which Nix knew he would), he just says, "Bon Voyage," all teasing and final and Dick can't say anything in protest because Harry is also in the room (Nix dragged him along specifically for that reason.)