He has Grace and his manual - he always carries them, in a backpack sort of thing with one cross-chest strap - and not much else on him to handle this situation. It might be Iggy. It might not be Iggy. He is not sure.
He looks around, concludes only that he is confused, and closes his eyes and listens instead.
"And what's your name?" inquires a stranger's voice from directly in front of him.
Cam opens his eyes. "Uh, hi, who's asking and where the hell am I?"
"Sherlock. Milliways. Do please answer the question, I promise there will be plenty of explanations afterward."
"I am Sherlock Holmes; it is my business to know things. But in this particular case it wasn't terribly difficult to figure out, because I have already met nine of you, of whom every single one has the syllable 'bell' in her first name somewhere, and where applicable the last name 'Swan' or some variant."
"Nine of me. Definitely the nine of me part. Also the corresponding pronoun."
"I have met nine different versions of you from nine different universes. All are female. One is my girlfriend."
"...Okay, I grant that the fact that you knew my name suggests that there is something going on here, but how in the world - worlds - would you know I was one if they're girls?"
"See, again, Sherlock Holmes. Your bone structure is nearly identical, you move the same way, you speak the same way, you're carrying spiral-bound notebooks, you exhibit nearly every characteristic common to the Bells except for the ones directly related to sexual dimorphism in humans."
"How do you know about my notebooks, my backpack is zipped, have you been talking to Grace or something?"
"The bindings put pressure on the fabric of the backpack, distorting it in a distinctive pattern. Who is Grace?"
Cam smirks. "Ah, something you don't know. You're Sherlock Holmes, can't you figure it out?"
"Grace is evidently a notebook. You're carrying two. The other is a decoy, because you'd hardly name each book individually, there's hundreds, so unless it's an inherited title you must have combined the lot of them into one, how am I doing so far?"
"Mm, not a decoy? Serves some other function, then, I won't venture a guess until I know how your world's magic works beyond the obvious, would you like to meet the rest of you? They'll be terribly excited, or possibly appalled, there has after all never been a Bell who pees standing up before."
"I'm kind of appalled. Why am I girls?" Cam says, shaking his head. "I dunno, start me with one first, then I'll meet the onslaught of - what's the term? Sisters, cousins?"
"Alts. And I believe the specific collective noun is 'peal of Bells'."
"At least if you're one's boyfriend I don't have to expect a torrent of Jellybeans too, I think that might be a bit much and you're definitely not a Jellybean," snorts Cam. "Peal of Bells. Cute. Way too cute, why am I girls..."
"Tell me more of this Jellybean," says Minus, turning toward the door. "There's only one Bell with a unique significant other, and Sherlocks are in the minority, I'm one of two."
"...Oh. Jellybean's my boyfriend. He dresses up like Sailor Moon and he and Tilly saved my life when Iggy was trying to kill me and he's good at improvisational spells," says Cam. "We starting with your girlfriend?"
"Is he by any chance about six feet tall, curly brown hair, strong jaw...? Yes, I was planning to introduce you to her first, unless you object to that for some reason."